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what are information system hirarchy?
Multi-Key File Organisation In this part, we will introduce two basic file Organisation schemes that permit records to be accessed by more than one key field, therefore, allowi
What are the advantages of having an index structure? Ans: The index structures commonly provide secondary access paths, which offer alternative ways of accessing the reco
Why Like predicate used for? LIKE predicate: The LIKE predicate searches for strings in which have a certain pattern.
WHAT IS DSS? WRITE ITS REQUIREMENTS.
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
Durability : This property necessitates that once a transaction has committed, the changes made by it be never lost because of subsequent failure. Thus, a transaction is also a bas
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
File Manager File manager handles the allocation of space on disk storage. It starts and maintains the list of structures and indices described in the internal schema that is
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
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