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Handling Big Data

No Worries with Real Time Processing of Big Unstructured Historic Data with the Data Analysts of Ananova.

Large Data

Most of the companies worry about managing their large data, as companies are now employing more efforts to gain a competitive edge and stay ahead of the market trends. Their efforts are not only confined to understand marked, know their customers but they are going beyond that. For that, they have employed huge marketing teams to gather a lot of data, which they are storing, managing and planning to reach some deciding goals.

Data Ware House Personnel's do face new challenges daily with the security of critical data. Data is the base of any company, to protect it, companies employ infrastructure and IT leaders. When we think about the big terabytes of data and its analysis, a huge picture comes to our mind as the concept is about space and time.

There are companies which do offer big data to the public, a significant constraint in front of them is whether the existing conventional database systems of MySQL is capable of processing them and moves fast to the client end from the server.

Most of the Hosting companies do offer Unlimited MySQL databases, but most of the CEO's of companies do worry, what if they are exceeding what they can do with technology?

Experts View on Big Data

According to the experts, IT companies from the last couple of decades have been successfully processing large volumes of data without any hassle. The principles learned are applied today also.

The market doesn't stop for any company, and they keep on acquiring new data, and it has become the focus of debate what to find out from that data, then only the choice of choosing the infrastructure comes.

Real Time Processing of Data

When the companies are providing the data online, there is always need to process it in real time. There could be leisure available at the date of aggregating, analyzing data, but when it is a matter of online data, it must respond very quickly.

What are the technologies these social media sites like Twitter or Facebook are applying, how they are managing the comments, videos fast? Are they using the same MySQL relational database technology to manage all the stuff?

In technical terms, one can say that on Twitter and Facebook, it is all raw feeds, hopefully, someday, they will take some pain to add some structure to it.

Is there any system available which can convert this unstructured data into a format which works fine, in a cost-effective manner?

How much investment, do the companies may put while dealing with this unstructured data?

Big Technology Suppliers in the Market

You might be already using the technology provided by one of these big shots:

Oracle: Offers MySQL database, which it acquired from Sun Microsystems, one of big data player.
IBM: Offers a broad range of infrastructure products and integration services.
Microsoft: provides SQL Server and also have partnerships to provide bolt-on Hadoop.
Greenplum: One of the fastest growing company in the data world.
SAP: Owner of SYBASE and creator of HANA, in-memory relational database, with cache built on top.

There is an error in creating the table in SQL .Can you guide me how to create a table in SQL?

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SQL Hosting Services

SQL is an ANSI (American National Standards Institute) standard computer language for accessing and manipulating database systems. SQL statements are used to retrieve and update data in a database. SQL works with database programs like MS Access, DB2, Informix, MS SQL Server, Oracle, Sybase, etc.

SQL is a standard computer language used for accessing and manipulating the database. It stands for Structured Query Language. With SQL allows we can to access a database, as SQL is an ANSI standard computer language, With SQL, we can execute queries against a database, can retrieve data from a database, insert new records in a database and can also update records in a database. SQL is very easy to use.

MySQL does not support features like stored procedures, triggers, referential integrity, and SQL unions and subqueries which are there in relational databases. So there are limitations to the environment in which it can be used.

But, it is well suited for Web applications.

Recently, MySQL added support for transactions; they are apparently at work now on stored procedures. That is why MySQL is an excellent product and getting better all the time.

Data Manipulation Language (DML)

SQL is a syntax for executing queries. But the SQL language also includes a syntax to update, insert, and delete records. These query and update commands together form the Data Manipulation Language (DML) which are a part of SQL part of SQL:

* SELECT command is used to extract data from a database table

* UPDATE command updates data in a database table

* DELETE is used to delete data from a database table

* INSERT INTO inserts new data into a database table

SQL Data Definition Language (DDL):

The Data Definition Language (DDL)is a part of SQL that allows the user to create or delete the database tables. We can also define indexes (keys), specify links between tables, and impose constraints between database tables.

The most important DDL statements in SQL are:

* CREATE TABLE – creates a new database table

* ALTER TABLE – alters (changes) a database table

* DROP TABLE – deletes a database table

* CREATE INDEX – creates an index (search key)

* DROP INDEX – deletes an index

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Dynamic Documents Using JavaScript

Dynamic documents created using JavaScript provide all the functionality of static documents written in HTML. If you can write it in HTML, you can write it on-the-fly in a document script.

In fact, you can write your whole document in a script which converts document properties into a formatted area that can be placed at the beginning of any document you write. You can also have a script after the BODY tag that writes a document footer in a similar fashion.

You cannot change anything on your current page once the document is finished. If you want to write to the current document, you have to open it and write to it via scripts placed at the beginning and end of the document.

There is also another option to write to the current document.For this purpose, you can also choose to rewrite the entire document.

A document is open until you specifically close it or until the browser runs out of things to write about it. When you first open a window, the document associated with that window also opened.You can then write to it with a header script. Then the browser writes all of the body if there is one, and anything it finds in the footer script if there is one.

When it reaches the end of the HTML text, it automatically closes the document. Note that if you open a new window with myNewWin = self.open('', 'NewWin'), you do not have to issue a document.open(). Just start writing on the blank page.

If you use the onMouseOver event to write to the status bar, you find that if you, move your mouse too quickly, you miss the status write. It is because it rapidly replaced by the browser's response to the event.

When you exit, the status written will stay there until you encounter another link. If you want to use the content of your link in a function called from an onMouseOver handler, you can pass the function the keyword this.

To provide a canvas for yourself to write on, use the document.open() command. It is a good idea to precede this with a document.close() command as a safety precaution, in case there is already a document open.

You can open or reopen a document in the current window or any window for which you have a reference. Opening a document in that window clears anything that is already there. Once the document is open, you can write to it.

If you try to write to a document that is not open, nothing will happen. No error will occur the command will just fail.

You can write anything to a nascent document, including scripts. If you are creating a window from scratch, then you have to write everything.

In JavaScript, the links array canvassed to provide a list of links in a document. Links have only one property, the target.

The target is not the URL pointed to by the link; rather, it is the window into which that URL loaded. Any link is also a location object so that you can dissect the link in the same way you dissect a location object.

Links can have an onClick handler just as buttons do. However, when the onClick handler finishes, the URL specified by the link will be loaded. If you do not want the link to go anywhere, just specify the current URL as its destination.

And if you want to use a link to execute a function, use HREF= 'javascript: myfunc()'. Myfunc() can call a function or contain JavaScript code. For example, HREF='javascript: self.close()', immediately closes the current window.

Both text and images can be links. You can include both in the same link if you want so that clicking either the text or the image will activate the link's events.

Anchors consist of text or images in your document that is marked, usually named, and referenced by a link within the same document.

The document object has an anchors array, but at this time its use is quite limited.

You can find out how many anchors are on the page using the length property. The property arrays anchors[i].value or anchors[i].name can be accessed without error, but will also be empty.

Because images can be links, you can use them as buttons to call functions if you use javascript: xxx() as the HREF instead of a URL.

The location, title, lastModified, and referrer are the four properties that are very useful in keeping your documents up to date.

These resources are used to write a header or a footer for your documents dynamically.

The status window created with a javascript openStatus link attached to an image. This function,openStatus, creates a new window with everything turned off but the status bar. It sizes the window so that only the status bar is showing.

It also checks that the window created by examining aStatWin for a null value.It places a dummy button in aStatWin and sets the initial and default status.

The setStatus() function checks to see if aStatWin exists before it tries to address one of its objects. If aStatWin does exist, setStatus changes the content of its status bar. setStatus() then sets the focus on the dummy button in aStatWin to bring the window to the front.

It's done by a call to the setFocus() method. You can close it using an image button linked with a call to close(). The close() function simply closes aStatWin and makes sure that its value is reset to null.

You can place your form element values, or anything else, in the location's search property. As long as you precede it with a question mark (?), location.search will retrieve it.

However, not all non-alphanumeric characters can be placed in the string or recovered intact. If you are going to concoct a home-grown search string, you may either need to encode the parameters yourself or not allow non-alphanumeric characters.

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Using Forms in Web Development

You can get input from your users via HTML form elements. You can have many forms on a page. If they are named, you can refer to them by name. You can also refer to a form by its index into the zero-based forms array.

Each form can have any one of the standard HTML form elements. These include single-line text, radio, checkbox, hidden, password, reset, and submit. There is also a select widget, which can be either a drop-down list or open list, and a text area widget, which can be used to collect large amounts of text spanning multiple lines.

When you submit a form, all the values of the various form elements are retrieved, parsed, and concatenated with the location object:

They are placed in the path and preceded by question marks (?).
The value of location.search is precisely that string, including the question mark (?).
This string is not just a simple list of element contents, however.
Each item value is placed in the string in the form elementName=elementValue and followed by an ampersand (&).
Any non-alphanumeric characters are coded or escaped.
The ASCII value of any such character is changed into a two-digit hex number preceded by a percent sign (%).
If text field or text area elements have multiple words, these words are separated by a plus sign (+).

Consequently, when you get the location.search string, you have to decode it to get the various form elements that it contains.

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JavaScript Objects

Document Object

The document object encapsulates all JavaScript objects that correspond to the HTML elements. It is the parent of forms, links, and anchors. These objects occur as arrays and are accessed as document.Forms[xx], document.Links[xx], and document.anchors[xx], where xx is an array index.

The document object also has several other useful properties. It has a property, for example, for all of the standard object colors, such as the background color, text color, and link colors. You cannot change the property of a static closed document, however, so these properties are useful only when building a document.

Location Object

The location object mostly holds information about the URL to which the browser points. The browser reads this marked up text from the server's disk and interprets it just like Microsoft Word reads and interprets a file on your disk.

In addition to the URL, the location object also contains any post parameters of an HTML form submitted via a Submit button or your call to submit(). Because of this, you can use the location object for temporary storage.

The script works by first obtaining the current location. It then strips off the file name and replaces it with the value of the radio button clicked. It also makes sure to tack on the suffix, .htm. It presumes that the message HTML files are in the same directory as the current page.

However, it would be easy enough to build in a subdirectory name just for the messages or even have a separate subdirectory for each person. The location object then set to the newly constructed URL. Setting the location object retrieves the file at this place.

History Object

The history object is a list that contains the locations of all the URLs that you have visited. You can move backward and forward through the history list with history. back and history.forward. You can also move around in the list in a relative fashion with history.go().

This function takes a positive or negative integer argument and moves you that many URLs forward or backward in the history list. The only property of a history list you can access is its length, which is the number of items in the list. You can neither set nor retrieve history list items.

Although it would be useful to retrieve history list items, this functionality removed from JavaScript. Unfortunately, each history list entry contains the entire location, including the search string.

If this information could be retrieved, the possibility exists that malicious individuals might glean credit card or other personal information.

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JavaScript Designing

Designing JavaScript applications often work best if you lay out the interface first. It is a way to decide not only the layout but the events for which you need to write code.

Once you have the design, then write the code that works for each event. It is a standard technique for event-driven programs.

JavaScript can be used to create several useful visual effects, including alternating color schemes, fades, scrolling marquees, and dynamic graphics.

Unlike effects created using other tools, JavaScript effects load quickly as part of your document, and can start even before a page is completely loaded.

There are two main frames of the message editor. The top frame displays the control panel. It is as wide as the browser allows and it has a fixed height sufficient to contain all of the controls.The top panel subdivided into a left and right section. The left just displays the last font color used. It is a fixed width. The right contains all of the controls and extends to the edge of the screen.

And the second frame will hold the text box where the message edited. Like the other frame, the width is the same as the screen. Its height is variable, taking up the remainder of the vertical space.

When JavaScript creates the objects from the framesets, all of the frames get "flattened." In other words, each frame, regardless of how deeply it is nested, is considered a child and is placed into the same frame array. All frames put into the array in the same sequence that they appear in the HTML file.

It makes it easier to refer to a property in another frame accurately. You don't need to know the relative relationship between frames since they are each a child of the parent.

If you are familiar with any object-oriented languages, you expect an object hierarchy to begin with a generic object from which all other objects are descendants or children. Unfortunately, the JavaScript object hierarchy does not follow this model.

It described as a system of ownership, and, even then, the analogy is not exact. For example, a window that creates another window could think of as the parent of the new window. However, if you try to refer to the original window from the child by saying parent.someobject, it will not work.

The Navigator is, in a way, the parent of all other JavaScript objects. It is the executable that runs the browser. The Navigator is responsible for the creation of all browser windows.

It is also responsible for responding to global window events. The Navigator is not a visual object. You cannot see it. You only interact with it through its visual construct: its windows.

Most Navigator window components manipulated in a yes/no fashion at the time of window creation. These include the menu, button bar, location display, status display, history list display, and scroll bars. At the time of window creation, you can determine whether the window resized as well as find its dimensions.

It might seem like a significant restriction. By rewriting the document, however, you can change the contents of a window. This technique enables you to modify the values of form elements, the content of the status bar, the position of the pointer in the history list, and the location at any time.

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Formatting with JavaScript

Background color and tiles have forever changed the Web. A site without a history is considered old-fashioned and behind the times. It puts a burden on the designer to be a color coordinator.

If you change the background color, you also need to be able to modify the colors used to display text. Having the background color match the text color makes the text invisible.

Knowing the text properties of the current document, you can use these values to set the text properties for any new documents. Carry out the new documents the same as the current one, or create a new color by manipulating the current property values.

Another use is to provide feedback that the user's action was recognized. You can either replace the existing background or possibly flash the background. You can also use it with a countdown sequence like ticks of a clock.

There are five text properties available from the browser. These all reflect the values of the TEXT attribute of the BODY tag. The first two are the color for the background and the text of the document. Their properties are called bgColor and fgColor.

And the three other text properties reflect the three different colors applied to hyperlink text. Usually, you want your hyperlinks to stand out from the rest of the text.

Although new browsers displayed these links by underlining the text, now, most browsers distinguish these links by color. They also provide feedback to the user by changing this color momentarily when the user clicks the link. After a link is visited, the color also changes. Respectively, these properties are called linkColor, alinkColor, and vlinkColor.

Before JavaScript, all color values were specified using the RGB hexadecimal values. It is a six-digit number. It is often called a triplet as divided into three sets of two digits each; the first two digits specify the amount of red, the second two the amount of green, and the last two the amount of blue.

You create new documents using the document.write or document.writeln methods. As part of the string used in a document.write method, and you can use the font methods instead of hard coding in the style tags.

It can be easier to debug using document.write (promptstring.bold()) than document.write ("" + promptstring + ""). It also allows for the browser to handle implementation of HTML tags, for which specifications may change in the future.

There is also the case in which the new HTML code is never directly displayed by the browser. Instead, using the various user inputs, the HTML code is stored in either a text box or in a hidden value. When complete, the resulting code submitted to the server, which processes it.

And the Web-based message board is the practical example of it. Users can compose messages using a JavaScript-enhanced message editor. Because the messages become part of a Web page, they contain various physical styles, such as bold and italics. Buttons can be part of the form, so users do not necessarily need to know the HTML code to add italics or bold to their messages. When a message is complete, it can be sent to the server and appended to an existing page.

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Comparing JavaScript

JavaScript is somewhat minimalist in its approach. Many familiar elements, such as explicit data types (int, String, REAL), are missing or have been substantially simplified.

However, JavaScript also provides many powerful object-oriented constructs which greatly simplify program organization. In this way, JavaScript has the expressive power of languages such as C or Java, while also having fewer rules to remember.

One of the main differences between JavaScript and most other languages is that it does not have explicit data types. There is no way to specify that a particular variable represents an integer, string, or a floating-point number.

Any JavaScript variable can be any of these, in fact, and the same variable can be interpreted differently in different contexts.

There is a crucial point about the JavaScript language.It does not have explicit data types, and it does have implicit data types.

The another critically important point about the JavaScript is that it has a set of conversion rules that allow it to decide how to treat a value based on the context in which it used.

JavaScript programs are collections of statements typically organized into functions.

These functions manipulate variables and the HTML environment in which the script itself works.

In JavaScript, strings may be specified using either single quotes ('stuff') or double quotes ("otherstuff"). If you begin a string with one type of quote you must end it with that same form of quote for example, "badstuff' is not a right string in JavaScript.

Strings are nested by alternating the types of quotes used. In fact, you must alternate single and double quotes if you wish to put one string inside another.

The basic unit of work in JavaScript is the statement, as is the case in most programming languages. A JavaScript statement accomplishes work by causing something to evaluate.

It can be the result of giving value to a variable, by calling a function, by performing some calculation, or any combination of these.

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Action Oriented JavaScript

JavaScript is an action-oriented model of the World Wide Web. Elements of a Web page, such as a button or checkbox, may trigger actions or events. When one of these events occurs, a corresponding piece of JavaScript code, usually a JavaScript function, is executed.

And that function, in turn, is composed of various statements which perform calculations, examine or modify the contents of the Web page, or perform other tasks to respond in some way to that event. For example, pressing the SUBMIT button on an online order form might invoke a JavaScript function that validates the contents of that form to ensure that the user entered all the required information.

Attributes Supporting JavaScript

Many existing HTML tags now have additional attributes to support JavaScript. For example, all elements of a form identified with the NAME element. Using NAME to determine objects in your documents will simplify your coding and debugging.

Handling Data with JavaScript

Like any language, JavaScript manipulates data. It is an object-based language, methods, and functions in it act on the data in the objects. Other than string, math, and date objects, JavaScript is limited to operating on browser objects and other objects exposed to the browser.

These other objects can include plug-ins, Java applets, and ActiveX. It allows you to create new documents, modify your existing forms, and build applications.

JavaScript works with browser objects. Most of the code manipulates HTML elements.For example, it will read properties of a link or write information into a Textarea.

But this is a limitation. There are not any new operations that give you multimedia capabilities like sound or graphics. To add these types of features, you need to extend the ability of the browser with plug-ins, Java applets, or other external applications. These programs may or may not make their objects available to JavaScript.

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Use of HTML or XHTML in Web Development

FrontPage which is a very common website design tool developed by Microsoft for my websites. It allows website development without any in-depth knowledge of web development. Shared hosting plan at cpwebhosting.com supports FrontPage server extensions.

If you intend to use FrontPage, you should look for a Windows hosting solution by cpwebhosting.com.

Frontpage automatically writes the HTML, and we need to concern only to the appearance of the page.

HTML contains small markup tags which tell how the pages are to be displayed. An HTML file should have an .htm or .html extension.

Each HTML document begins with a DOCTYPE declaration that specifies which version of HTML the document uses. You can choose any DOCTYPE, according to your requirement.If standard HTML does not meet your needs, then use a custom DTD.

XHTML 1.1 is pure XML, and only intended to be XML. Therefore XHTML 1.1 documents must be sent with an XML-related media type, such as application/xhtml+xml. If your document is just pure XHTML 1.0 (not including other markup languages) then you will not yet notice much difference. However as more and more XML tools become available, such as XSLT for transforming documents, you will start seeing the advantages of using XHTML. XForms, for instance, will allow you to edit XHTML documents (or any other sort of XML document) in simple controllable ways. Semantic Web applications will be able to take advantage of XHTML documents.

If your document is more than XHTML 1.0, for instance including MathML, SMIL, or SVG, then the advantages are immediate; you can't do that sort of thing with HTML.

XHTML Modularization

XHTML Modularization is useful for designers of XHTML-based languages. XHTML Modularization splits XHTML into some modules that can be individually selected when defining a new language; in this way any XHTML-based language that uses tables is guaranteed to use the same definition of tables, and not some different version. Modularization also makes it clear where it is OK to add new elements, and where it is not.

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Managed WordPress Hosting	$89.00/mo.	Lansing, MI, US	Price : $19.00/mo.	Visit Now

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