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Define page.
The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Hot Backup: Some sites cannot terminate the database while creating a backup copy of the files. The cold backup is not a reliable option. So different kinds of backing up database
Eliminate Columns Not Dependent On Key The Employee Relation satisfies - First normal form - As it has no repeating groups. Second normal form - As it do not have multi-a
write on the various type of relationalkey
Every simple attribute of an entity type have a possible set of values that can be attached to it. This is known as the domain of an attribute. An attribute cannot have a value out
how draw er diagram
Define What are the desirable properties of a decomposition Ans: What are the desirable properties of decomposition - dependency preserving. Because Lossless join and dependen
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
How can Redundant Associations be done It can be done by asking questions: i) Is there a specific arrangement of network which would optimize critical aspects of completed
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