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Explain Interblock gap?
Interblock Gap - A track of a disk is separated into equal-sized disk blocks. Blocks are separated through fixed-size gaps, called as interblock gaps that involve specially coded control information written during in the disk initialization.
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
Give some encryption techniques? A) DES B) AES C) Public key encryption
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Describe Specialsation and generalization? Specialisation /generalization: This is a top down and bottom up approach to the design of database. It displays the IS_A relation
what do you mean by consistency in rdbms?
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
what are the main characteristics of database
Describe an data dictionary? A data dictionary is a data structure which keeps meta data about the structure of the database ie. the schema of the database.
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