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Tag Archives: SQLServerPediaSyndication
SQL Triggers – An Introduction
SQL Triggers – An Introduction Contents Introduction Magic Tables Difference between Stored Procedure and Trigger DML Triggers After Triggers Syntax of the After trigger Example of After Trigger for Insert Example of After Trigger for Delete Example of After Trigger … Continue reading
Isolation levels in SQL Server
Isolation levels :- Isolation level is required to isolate a resource and protect it from other transactions. This is achieved with the help of locks but what locks are needed and how they can be established is decided on the … Continue reading
Posted in SQL Isolation Level, SQL Server
Tagged CodeProject, SQL Advance Concepts, SQLServerPediaSyndication
33 Comments
SQL Server Functions- An Introduction
SQL FUNCTION: – Function in a database can be defined as the code segment consisting of a logical group of SQL statements which takes some input arguments (if required), run in a sequential order and returns the output either in … Continue reading
Sql Joins- Inner Joins, Self Joins, Outer Joins, Cross Joins
I generally feel that people are afraid of Joins in SQL Server. But if they know what the different types of Joins in SQL Server are and how they can be best used then they really enjoy using them. By … Continue reading
Posted in Most Imp SQL Concepts, SQL Joins, SQL Server
Tagged SQL Basic Concepts, SQL Joins, SQLServerPediaSyndication
33 Comments
Sql server Constraints – Primary Key, Foreign Key, Unique Key, Not Null, Check Constraints
Introduction A constraint is a property that is assigned to a column or a group of columns to prevent incorrect or corrupt data from entering into the tables. These constraints ensure the accuracy and reliability of the data into the … Continue reading