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What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Question: (a) Discuss the difference between a composite key and a composite attribute. How would each be indicated in an E-R diagram? Support your answer with appropriate exam
I need to Map an E-R diagram to a relational schema
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
What is conceptual model ? A conceptual model is a independent of both hardware and software.
OBJECTIVES After going through this unit you should be capable to: Explain the File Based system and its limitations; Explain the structure of DBMS; Explain the
What is the meaning of Data independence? Data independence means a programs that are not dependent on the physical attributes of data and a programs that are not dependent on
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