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How to reduce data redundency
growing phase and shrinking phase are disjoint, why ?
complete er diagram of textile industry management
Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
The primary key is selected from the
What is a Built-in A notation of identity is built-into the data model or programming language and no user-supplied identifier is needed. This form of identity is used in objec
Types of Data fragmentation
Submission Requirements All answers must be computer generated (including text and diagrams). The hand-in version must include a header page (or with sufficient space)
What are the costs to be considered when a transaction has to be rolled back when recovering from deadlock? Ans: A few transaction will must rolled back (made a victim)
What are the advantages of by using an index and what are its disadvantages ? In difference, if the search key of a secondary index is not a candidate key, it is not sufficient
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