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What is a Database?
To know what database is, we have to start from data, which is the basic building block of any DBMS.
Data: Facts, figures, statistics etc. having no particular meaning (e.g. 1, ABC, 19 etc).
Record: Collection of related data items, e.g. in the above instance the three data items had no meaning. But if we organize them in the following way, then they collectively show meaningful information.
Information about a bank is about customers and their account. Customer has a name, address that consists of house number, area and city, and one or more phone numbers. Account ha
Discuss the types of integrity constraints in which must be checked for the update operations - Insert and Delete. Give examples. Insert operation can violet any of the subse
Distributed Database Management System
It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.
Determine the Persistent object Persistent object can be stored in one of the following: Files Cheap, permanent, simple storage Low level (Write, Read) Ap
explain equi-join using illustration
what is Nested relational model? Explain with examples.
explain ER Modeling?
List and also explain the dissimilar stages of DDLC ?
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
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