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  • SQL InterviewQuestions-Part4
    on Mar 24, 2010 in SQL Interview Questions
    31) What is the difference between stored procedure and a trigger?a. Storedprocedure 1. We should call it explicitly 2. They can't be inactive Trigger 1. They can be called automatically inplace of or after (data modifications) triggerin...
  • SQL InterviewQuestions-Part3
    on Feb 4, 2010 in SQL Interview Questions
    21) What is select into command?a. It selects values from one table and inserts them into another table at the same time ex: SELECT column1, column2, INTO table2 FROM table122) Why we use DISTINCT command?a. This is used to return o...
  • SQL InterviewQuestions Part2
    on Jan 26, 2010 in SQL Interview Questions
    11) what is a constraint?a) A constraint is a property which is assigned to a column or set of columns in a table. There are 5 types of constraints Primary key, Unique key, Foreign Key, Check, Not Null12) What is an entity integrity?a) This ens...
  • SQL InterviewQuestions Part1
    on Jan 20, 2010 in SQL Interview Questions
    1) Differences between Having and Where Having:1) It applies to a group as a whole2) It selects rows afetr grouping3) It can contain aggrigate functions4) It is used only in select clause Where:1) It applies to individual rows2) It selects rows b...
  • Validating User Credentials
    on Oct 21, 2009 in Validationg user credentials
    Validating User Credentials---------------------------------Let us see how to validate the user credentials(login and password)In aspx.cs under Button_Click() method write the following code string email= txtemail.Text; string password...
  • 3-Tier Architecture
    on Sep 23, 2009 in 3-Tier Architecture
    3-Tier Architecture-----------------------Today Iam going to discuss about the 3-Tier Architecture .PresentationLayer: This is the layer through which user enters the values or values are shown to the user.BusinessAccessLayer: This layer is u...
  • Binding Data to Dropdownlist from Database
    on Aug 18, 2009 in Binding Data from Database
    Binding Data to Dropdownlist from DataBase---------------------------------------------------------------Today Iam going to write on Binding Data to Dropdownlist from DatabaseConsider that we want to populate the Dropdownlist with a list of countrie...
  • C# InterviewQuestions-Part 10
    on Aug 6, 2009 in C# Interview Questions
    Interview Questions----------------------91. How many types of errors are there?a ) 2 types1. Run time errors2. Compile time errors92. Give some examples of compile time and runtime errors?a ) Compile time:missing semocolonsuse of undeclared varia...
  • C# InterviewQuestions- Part 9
    on Jul 13, 2009 in C# Interview Questions
    81. why we use the ref keyword?a ) If you want to pass a parameter by reference you should use the keyword ref82. If an out parameter is not assigned a value with in the body of the function does that method complile?a ) No. it won't compile83. Ho...
  • C# InterviewQuestions- Part 8
    on Jul 2, 2009 in C# Interview Questions
    Interview Questions-----------------------------71. Can we declare an abstract method in non abstract class?a ) No. it can declared only in abstract classes72. Can we use static or virtual keywords to an abstract method?a ) No73. Can an interf...
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