maximum size of a row?

8060 bytes. Don't be surprised with questions like 'what is the maximum number of columns per table'. Check out SQL Server books online for the page titled: "Maximum Capacity Specifications".

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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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