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Define object-relational systems?
Systems that give object-oriented extensions to relational systems are known as object-relational systems.
What are the various states through which a transaction passes through in its lifetime? Briefly discuss all the events that causes transition from one state to another. Ans:
er diagram of sport
Explain differance between Primary and secondary storage ? Primary and secondary storage Computer storage is classified within primary(main) memory and secondary(per
Types of data independence Data independence can be classified into the following two types: Physical Data Independence: This means that for any change made in the physi
Illustrate how you can use QBE to perform logical AND and OR operation
Implementing software control To implement software control designer must redesign strategy of state event model which is present in dynamic model. There are three basic ap
The dataset " CFOLYMPICS.XLS " contains the observations used in the above article. The definitions of the variables are also included in this spreadsheet. However, for the purpo
What is a foreign key, and what is it used for? A foreign key is used to establish relationships between relations in the relational model. Technically, a foreign key is a colu
what is multivalued dependency
what is cascading rollback
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