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Example RELATION SCHEMA for STUDENT: STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
1) Information about a bank is about customers and their account. Customer has a name, address which consists of house number, area and city, and one or more phone numbers. Ac
distributed quey processing
What does Aggregation mean?
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
What are aggregate functions? And list the aggregate functions supported by SQL? Aggregate functions are functions that take a collection of values as input and return a one va
Which operation is used if we are interested in only certain columns of a table? PROJECTION operation is used if we are interested in only certain columns of a table.
read-set(T) : Each data items that are read by a transaction T Timestamps : for all transaction T, the start-time and the end time are reserved for all the three phases.
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