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What three major types of actions includes databases? Briefly discuss these The three major types of actions including databases are: (i) Defining: It includes specifyin
What is NULL? Simply NULL means not in value.
What are the responsibility of File manager? File Manager : Manager allocation of space on disk storage and the data structures used to represent within stored on disk. It is a
We require an advanced system for a Sports Centre, you are concerned only with representing the data discussed below about bookings and members. (The complete system may contain ot
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
what is specialization?
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
deffine class&object
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
What is data independence? Data Independence: Techniques which permit data to be changed without affecting the applications in which procedure it. There are two types of data
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