Database:Define cursor?

.A stored proceduer is a named group of sql statements that have been previously created and stored in server database. (More...)

It is a Stored procedure that initiates an action when an event occurs. Event can be insert, delete or update. (More...)

Declare cursor,Open cursor,Fetch row from cursor,process fetched row,close cursor, deallocate cursor
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Collation is a set of rules that defines how the data is to be sorted and compared. (More...)

A sub-query is also refereed as sub-select, they are enclosed with in the body of another sql statement, Sub select statement generally return single row i.e atomic value and then compared with multiple rows using IN keyword in sql statement that encompases sub-select statement. (More...)

Primary key is use to uniquely identify each row they are unique and cannot be null where as foreign key are use to ensure data integrity and relationship between tables. (More...)

Identity column is a column that automatically generates numeric values. Start and increment value are the two properties of prior importance that need to be set with respect to Identity column. Value of this column is mostly used to identify each row uniquely (More...)

Its main aim is to ease the implementation of task for the dba with scheduleing of the jobs and scripts. (More...)

When two or more user try to update same type of data in a table then Database Concurrency helps in this situation.

There are 2 types of Database Concurrency

Pessimistic: When one user try to change the data with pessimistic concurrency then a lock is placed on the data in a table so that another user cannot change data. when one user finishes then other user can able to change.

Optimistic: When two user works on the same data in a table and one change that data first then second user cannot change that same data becasue the which he have using is allready changed so he cannot do the change becasue change apply to another data that is changed by first user. (More...)

Data Definition Language (DDL) (More...)