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Explain Authorization and Integrity Manager ?
Authorization and Integrity Manager: Tests for the satisfaction of integrity constraints and checks the authority of users to access data.
What is DataWarehousing? Subject-oriented, meaning that the data in the database is organized so that all the data elements relating to the similar real-world event or object
Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName
Write an sql statement to find what is the percentage of home policies which are from the state of Arizona out of all Home policies by Policy Value.
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
What is assertion? Mention the forms available. An assertion is a predicate expressing a condition that we wish the database always to satisfy. Domain integrity constraints.
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
Explain about database system structure? Storage manager Authorization and integrity manager Transaction manager File manager Buffer manager Storage manager
why we fregment at all?
Describe the types of attributes? Types of attributes: An attribute's category determines the type of values that are permitted in the attribute. For instance, the value vers
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