What is normalization?

Database normalization is a data design and organization process applied to data structures based on rules that help build relational databases. In relational database design, the process of organizing data to minimize redundancy. Normalization usually involves dividing a database into two or more tables and defining relationships between the tables. The objective is to isolate data so that additions, deletions, and modifications of a field can be made in just one table and then propagated through the rest of the database via the defined relationships.

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How to Prevent Users to Press F5 key (Refresh button)

Some times we want to prevent user to Press F5 key to prevent Page Refresh. You can use the below script. Paste this code in the Head Section of your Page. <script language=javascript> document.onkeydown = function(){ if(window.event && window.event .keyCode == 116){ window.event.keyCode = 505; // Capture and remap F5 } if(window.event && window.event .keyCode == 505){ // New action for F5 return false; // Must return false }} </script>

Access Different interface method with same Name implemented in a class

We use interface and multiple interface inherit it into class, then we implement the methods of interface as it is necessary but what will happen if two interface have the same mentods with same signature and inherited in the same class? Now questions arises from here are : Q1) Both the methods will be implementable which is with the same name and signature? Q2) If methods are implementable then how it is possible? Q3) If it is possible then can we access both the methods? Q3) If it is possible then what is the way to access these methods publically? The answer of all the above question is below: 1) Yes both the methods with same name and signature is implementable. 2) we have to implement interface explicitely preceding with iterface name. 3) Yes it is possible to access the methods. 4) Yes we can

Should have on tips of our lips.........ACID PROPERTIES

Introduction When ever we process any DML statements transactions are implicitly called. Ie. when ever no begin transaction statement insert ,delete, update statements will have transaction statements around them implicitly. ACID concept is one of the oldest and important properties of the Database. It sets forward four goals that every database management system must strive to achieve: atomicity, consistency, isolation and durability. No database that fails to meet any of these four goals can be considered reliable. Atomicity Atomicity states that database modifications must follow an "all or nothing" rule. Each transaction is said to be "atomic." If one part of the transaction fails, the entire transaction fails. It is critical that the database management system maintain the atomic nature of transactions in spite of any DBMS, operating system or hardware failure. Consistency Consistency states that only valid data will be written to the database. If,...

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