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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
Name the three major set of files on disk that compose a database in Oracle. There are three main sets of files on disk that compose a database. All the files are binary. These
Suppose that in an organisation, an employee may do different roles in dissimilar projects. Say, RAM is doing coding in one project and doing designing in another. Suppose that the
What is the role of ORDER By Clause? ORDER BY clause: The ORDER BY clause permits you to sort the records in your result set. The ORDER BY clause can just be used in select s
Give an example of operations from the State Actions and Activities. For instance, in bank the activity verify account code and verify password
Domain Constraint It shows that each attribute in a relation has to contain an atomic value only from the corresponding domains. The data types associated with commercial RDBMS
want a idea for final year project
What is Foreign Key Foreign Key: Sometimes we may have to work with an attribute that does not have a primary key of its own. To recognize its rows, we have to use the primar
One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
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