Saturday, 23 February 2013
In SQL,when ever you want to SELECT some data, or UPDATE or DELETE some information from a Table, you needs to provide some condition, on basis of which operation will be performed. It's not necessary to SELECT, UPDATE or DELETE all data from a table or view. So, condition is necessary to filter the data when performing an operation...
Saturday, 23 February 2013 1 Read more »
Sunday, 17 February 2013
SELECT command is use in SQL to "SELECT [some info] FROM [a location]". Now, this is the basic structure of the SELECT query, where SELECT and FROM are 2 commands of SQL. Here, [some info] part will be the column names separated by comma (,) sign and [a location] part will be the name of the Table or View. So, the syntax will be...
Sunday, 17 February 2013 1 Read more »
Friday, 15 February 2013
Paser String to Double:
You can parse a double value in string format to double in 4 ways.
Double.valueof(String s) : This method returns a double object containing the value invoked in it in string format.
It can trim white-space in start or end of the string argument, by using String.trim().
It throws NumberFormatException...
Friday, 15 February 2013 0 Read more »
Thursday, 14 February 2013
SQL (Structured Query Language) is a type of programming language, which uses to communicate with database. It’s also known as “sequel”. It provides some syntax which helps you to interact with a database. These syntax are very similar to normal English language, so it’s easy to remember and use. Now a day, all major RDBMS (Relational...
Thursday, 14 February 2013 4 Read more »
Sunday, 10 February 2013
Model-View-Controller
(MVC) is a popular Software Architecture pattern widely used in web
applications. It separates application data from UI (user interface) by a thin
controlling layer, which actually helps as a bridge between UIs and model. In
this pattern the whole application is separated in 3 layers,
1.
Models
are answerable for encapsulating application data, for view...
Sunday, 10 February 2013 3 Read more »
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