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Explain cursors in SQL?
Cursors in SQL - An object used to store the output of a query for row-through-row processing through the application programs. Cursors are constructs which enable the user to name a private memory field to hold an exact statement for access at a later time.
Cursors are used to procedure multi-row result sets one row at a time. In addition, cursors remain track of which row is currently being accessed, that permit for interactive processing of the active set.
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Foreign Keys and NULL Let us take the relation: DEPT DEPT ID DNAME BUDGET D1 M
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
what is Nested relational model? Explain with examples.
basic structure of xml
DISADVANTAGES OF RDBMS
What are three components of the schema architecture proposed by ANSI/SPARC? The three component schema architecture proposed by ANSI/SPARC is as given below: External sche
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
1. Determine the set of minimal functional dependencies for the following data. The local bakery, Happy Cakes, needs your help designing a database that will support a kiosk in
What is transaction? Collections of operations that form a single logical unit of work are known as transactions.
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