RDBMS

Relational Data Base Management Systems (RDBMS), that maintain data records and indices in tables. In a relational database, relationships between data items are expressed by means of tables.

Normalization

In relational database design, the process of organizing data to minimize redundancy is called normalization.

Different Normalization Forms

1NF: Eliminate Repeating Groups

Separate table for each set of related attributes and give each table a Primary key

2NF: Eliminate Redundant Data

If an attribute depends on only part of a multi-valued key, remove it to a separate table.

3NF: Eliminate Columns Not Dependent On Key

All attributes must be directly dependent on the primary key.

BCNF: Boyce-Codd Normal Form

If there are non-trivial dependencies between candidate key attributes, separate them out into distinct tables

Stored Procedure

A stored procedure is a named group of SQL statements that have been previously created and stored in the server database. Stored procedures reduce network traffic and improve performance. Stored procedures can be used to help ensure the integrity of the database.

e.g. sp_helpdb, sp_renamedb etc.

Trigger

A trigger is a SQL procedure that initiates an action when an event occurs (INSERT, DELETE or UPDATE). A trigger cannot be called or executed; DBMS automatically fires the trigger as a result of a data modification to the associated table.

Nested Trigger:

            A trigger can also contain INSERT, UPDATE and DELETE logic within itself, so when the trigger is fired because of data modification it can also cause another data modification, thereby firing another trigger.

View

A simple view can be thought of as a subset of a table. It can be used for retrieving data, as well as updating or deleting rows. The results of using a view are not permanently stored in the database. When we update a value in the view it will change the Original table also.

Different Types of Join

Mainly 4 kind of join , Cross Join, Inner Join, Outer Join, Self Join

Cross Join

A cross join that does not have a WHERE clause produces the Cartesian product of the tables involved in the join. Result set is the number of rows in the first table multiplied by the number of rows in the second table.

Inner Join

A join that displays only the rows that have a match in both joined tables is known as inner Join.

Outer Join

A join that includes rows even if they do not have related rows in the joined table is an Outer Join.

• Left Outer Join: In Left Outer Join all rows in the first table. Unmatched rows in the right table do not appear.
• Right Outer Join:  In Right Outer Join all rows in the second table. Unmatched rows in the left table are not included.
• Full Outer Join: In Full Outer Join all rows in all joined tables are included, whether they are matched or not.

Self Join

When one table joins to itself

Index

An index is a physical structure containing pointers to the data. Indices are created in an existing table to locate rows more quickly and efficiently. The users cannot see the indexes; they are just used to speed up queries. . Effective indexes are one of the best ways to improve performance in a database application.

Clustered Index

Clustered index is unique for any given table and we have only one clustered index on a table.

Non Clustered Index

Many non Clustered Indexes as we can on database.

Linked Server

With a linked server, you can create very clean, easy to follow, SQL statements that allow remote data to be retrieved, joined and combined with local data.

Eg; sp_addlinkedserver, sp_addlinkedsrvlogin

Cursor

Cursor is a database object used by applications to manipulate data in a set on a row-by-row basis, instead of the typical SQL commands that operate on all the rows in the set at one time.

Collation

Collation refers to a set of rules that determine how data is sorted and compared.

Sub-query

Sub query is a SELECT statement that is nested within another T-SQL statement.

How can you store your favourite webpages in internet? Most of them are using browsers favorite button or just forward the link to your email or store the details in google docs right? My question is how can you save your webpages and webpage images or slides are stored in internet like a webpage?

Here is the significance of BO.LT, we can save the links webpages etc are in BO.LT site. The speciallity of BO.LT is keep the files and webpage scrooing like nuts and bolts,we can edit or recreat the files as our wish.when you can login to BO.LT you will get the simplicity of BO.LT, you can get a subdomain in BO.LT like soorajknair.bo.lt.

BO.LT is a page sharing service that lets anyone grab virtually any page on the web and tweak it to make it more relevant to their audience. Use it to create readable, personalized URLs for the links you traffic on Twitter, Facebook, email, display ads, search ads, and anywhere else you use pages to get attention and motivate your audience.

You can share, Like, publish  anything can done through BO.LT.in user’s inteface we will get the thumbnail portion of our shared documents.  BO.LT have realized that web pages are being held back because while they are tightly linked to one another, they are not connected to you. BO.LT to help turn the pages of the web into “Social Objects” that can be remixed and shared to be, well, less boring.

Let you “remix” pages and share them with the people you want to reach. BO.LT run a very advanced content delivery network that is tuned for incredibly fast serving and incredibly fast editing and sharing. When you put a page on BO.LT, it is a copy. Don’t worry, the original page on the original site is still safe. Your page, however, is nimble, changeable, and under your control.

BO.LT have designed the tool to be totally open – you can use it for free, and even anonymously. Obviously, we have held back some of the good stuff for our paying customers, but there is still plenty of runway. We hope you will join us.

You are working hard to gain followers, conversions, and repeaters of your message.  When your target clicks on your link, they expect responsive pages with relevant content. BO.LT gives you control, speed, and feedback so that you can win the battle for attention.

http://BO.LT

online purchase,online payment,debit/credit card payment are very common in todays world. Online shopping is the process whereby consumers directly buy goods or services from a seller in real-time, without an intermediary service, over the Internet. It is a form of electronic commerce. An online shop, eshop, e-store, internet shop, webshop, webstore, online store, or virtual store evokes the physical analogy of buying products or in a shopping centre.In these kinds of shopping usage of credit/Debit cards or internet banking system are very common. Why we cant use mobile phones for payment?

Yes mobile payment systems are the other method of payment transaction method so many Europian countries are using this method.Mobile payment or known also as Mobile wallet is an alternative payment method. Instead of paying with cash, cheque or credit cards, a consumer can use a mobile phone to pay for a wide range of services and digital or hard goods.

Many Business giants now heavily investing in mobile payment technologies it is evident that the time has now come to capitalize on this opportunity. Mobile Payment Services conference has therefore been specifically designed to empower stakeholders, providing them with a deep insight into the market that will assist in strengthing their mobile payment strategies and ensure they remain competitive.

Paymate is one of the leading mobile payment companies. PayMate’s mobile payment solutions link your mobile phone to any financial instrument of your choice, whether it’s an existing bank account, credit card or a prepaid account, turning your mobile phone into a secure tool you can use anytime, anywhere.

With PayMate, your phone is powered to instantly send and receive money, pay for your shopping, utility bills, flight & more tickets and so much more with unmatched speed and safety. Start paying with your mobile today.

PayMate is a Mumbai based wireless transactions platform provider founded by entrepreneurs Ajay Adiseshann and Probir Roy. PayMate is funded by Venture Capital firms Kleiner Perkins Caufield & Byers, Sherpalo Ventures and Mayfield Fund. Some companies that are a part of their portfolios are Google, AOL, Amazon, Sun Microsystems and SanDisk among others. PayMate has offices in India, USA, Sri Lanka, Nepal and UAE making it the single largest M- Commerce company in the sub continent, offering customized mobile payment solutions in each market with local partners.

http://www.paymate.co.in

ZipPay,Square and Venmo are the other mobile payment options

http://zippaymobile.com

http://squreup.com

http://venmo.com

Moving beyond trials, this is designed to provide real life commercial examples of the kind of business models, services and applications that are being launched to encourage consumer adoption of mobile-enabled payment mechanisms.

What is the significance of Fax in this modern generation? This is a natural question, But most of the business people are still using fax system. Is the importance of fax machine gone When email system comes into the world? While there are some great options out of there for doing internet faxing, they all seem to be missing one thing- Google Docs integration.

We have to create Google docs to fantastic fax machine using the website www.interfax.net, there is no telephone line needed for this system. The only thing is you must have a credit or debit card. You have to register using Google docs account in Interfax.net website. After registering you can send Google docs or spread sheets to any of the fax numbers, not single, you can send multiple fax numbers in a single click.

Google docs will receive fax messages in the pdf format, and that will stored in your Google account. The Google docs fax service is included at no extra cost for existing Interfax customers. www.ginzafax.com is the other Google docs fax provider in the internet world. To send a fax, just upload the document to Google docs and retrieve from the websites and send to multiple ax numbers.

Lenovo the the laptop giants are going to launch think pad tablet.Lenovo’s business-orientated tablet, the ThinkPad Tablet, is going to launch in markets soon.The 10-inch Android device, which Lenovo officially announced a little more than a month ago, boasts an impressive mix of consumer and business-friendly features that might please both you and your IT department.

Like other Android 3.1 Honeycomb tablets on the market, the ThinkPad Tablet has a 1280 x 800 multitouch display, 1GB of memory, front- and rear-facing cameras and a NVIDIA Tegra 2 dualcore processor. It comes in a 16GB model for $499, a 32GB version for $569 and a 64GB option for $669. Basic specs and price-wise, the ThinkPad Tablet is on par with the competition.

The ThinkPad Tablet gives mobile professionals the most intuitive user experience available on a tablet today.This is the first business friendly tablet, the users of lenovo can expect the same reliable and productive like the think pad.Lenovo Think pad Tablet includes the following things

• Optical Designer pen
• Full Size USP port
• Full size SD Card Slot
• mini-HDMI for connecting to external displays
• keyboard folio case with optical TrackPoint

the ThinkPad Tablet works with a digitizing pen that, unlike styluses used on traditional capacitive-screen-only tablets, can work on the screen even when your hand is resting on the touch display. It’s also pressure-sensitive, which means you can vary the width of your drawing line by decreasing and increasing pressure on the screen, instead of selecting a different pen thickness.

An Uptime and performance monitoring tool for your websites.If you are a business person with online presence,it is very important to know your webservice is 100% up in 24*7 basis.However all webservers are their own problems,most of the time the user(website owner) unaware of these problems,pingdom creates a simple and easy way to know the downtime and performance of your website.

With Pingdom, any problem with your website will be discovered the minute it happens. The website owner will be immediatly informed when your webservice is down,You will also be able to see detailed statistics of your website performance, giving you a historical record of all incidents.

Lots of information services are available in pingdom,when your webservice is down you will get information through,email,sms,etc with in minutes.This is very less expensive downtime alert service available in web.

You can create your pingdom account for free of cost and and configure your website in pingdom.

Pingdom makes it easy for you to monitor the uptime and response time of your websites and servers on the Internet. Here is a quick tour of some of the features.

Configure checks and alerts

Choose what you want to monitor and how to get alerted

Configure contacts

Create contacts for those who should receive error alerts

Uptime statistics

View gathered statistics about your uptime

Response time statistics

View gathered statistics about your response time

Detailed information about performed tests

View all individual tests performed by Pingdom and their results

Public reports

You can make your uptime statistics available on a public report page

Reports via email

Get daily, weekly or monthly statistics via email

http://www.pingdom.com

What is a blog?

Blog is simply called a personal diary. a person have to write his ideas, thinking’s, better opportunities, his beliefs, thoughts, about his creations, his habits and like all we have to write in the blog. Blog is your personal notes about anything, you have to publish it or restrict it with your selected circles. Means it is the online version of your personal diary, you can access this from everywhere in the universe using a internet connection.You can upload your travelling, photos and videos and all that is the advantage of the blog.

How to start a blog?

Starting your blog is very simple, If want your own name in your blog you can register a domain and purchase some web space and start a blog with the help of word press, joomla, Drupal like content management web applications.

The other simplest way to start a blog is to register a Blogger.com account and start a blog.

First of all you type the web browser www.blogger.com

And click the Get started Button for new registration; you can register the blog with a valid email address.

After registration you can login to the blog and name your blog

After naming your blog choose one template for your blog

your blog hasbeen created

Then start writing to your blog,you can also insert images,video’s to your blog and publish to your to public.

View your blog like this

Today, the connections between people increasingly happen online. Yet the subtlety and substance of real-world interactions are lost in the rigidness of our online tools.

Google like to bring the nuance and richness of real-life sharing to software. We want to make Google better by including you, your relationships, and your interests. And so begins the Google+ project:

That’s the Google+ project so far: Circles, Sparks, Hangouts and mobile. google beginning in Field Trial, so you may find some rough edges, and the project is by invitation only. But online sharing needs a serious re-think, so it’s time to got started.

Circles

You share different things with different people. So sharing the right stuff with the right people shouldn’t be a hassle. Circles makes it easy to put your friends from Saturday night in one circle, your parents in another, and your boss in a circle by himself – just like real life.

Hangouts

With Hangouts, the unplanned meet-up comes to the web for the first time. Let specific buddies (or entire circles) know you’re hanging out and then see who drops by for a face-to-face-to-face chat. Until teleportation arrives, it’s the next best thing.

Instant Upload

Taking photos is fun. Sharing photos is fun. Getting photos off your phone is pretty much the opposite of fun. With Instant Upload, your photos and videos upload themselves automatically, to a private album on Google+.  All you have to do is decide who to share them with.

Sparks

Tell Sparks what you’re into and it will send you stuff it thinks you’ll like, so when you’re free, there’s always something cool to watch, read, or share.

Huddle

Texting is great, but not when you’re trying to get six different people to decide on a movie. Huddle turns all those different conversations into one simple group chat, so everyone gets on the same page all at once. Your thumbs will thank you.

Google Plus Demo

http://www.google.com/+/demo/

How to Register Goolgle Plus

http://www.meabi.com/register-for-google-plus/

Now the Google plus is released for public

What does courteous.ly do?
If you haven’t already, go check out the video on the home page. In short, courteous.ly is a service for showing people your current email load. After you give courteous.ly access to your Gmail account, it periodically checks your email load. You can tell courteous.ly what it should monitor to measure it: the unread messages in your inbox, the total number of messages in your inbox or how much mail you’ve sent recently. When somebody clicks your courteous.ly link, they’ll see that your current email load is either “light,” “normal” or “high.”
What do light, normal and high mean?
It’s relative to you. If you normally have 40,000 unread messages in your inbox, what’s 50 more? But if you usually have nothing in your inbox, then 50 unread messages is a big deal. courteous.ly keeps a log of how many messages it sees to get a feel for what’s normal for you. That’s why the service takes a few hours to warm up: it needs to understand your patterns.
Why only Google mail?
We would love to work with every email account in the world. But we don’t want to store passwords. That’s what it comes down to. Gmail has an infrastructure that allows courteous.ly to work without ever knowing or storing anybody’s password. Most other email services do not. If you’d like courteous.ly for your company’s mail, drop us a line.

http://courteous.ly/

Google Wallet is an Android app that makes your phone your wallet. It stores virtual versions of your existing plastic cards on your phone. Simply tap your phone to pay and redeem offers using near field communication, or NFC.

Payments, offers, loyalty, and so much more

Google Wallet has been designed for an open commerce ecosystem. It will eventually hold many if not all of the cards you keep in your leather wallet today. And because Google Wallet is a mobile app, it will be able to do more than a regular wallet ever could, like storing thousands of payment cards and Google Offers but without the bulk. Eventually your loyalty cards, gift cards, receipts, boarding passes, tickets, even your keys will be seamlessly synced to your Google Wallet. And every offer and loyalty point will be redeemed automatically with a single tap via NFC.

More Details http://www.google.com/wallet/