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Differance between Unordered and ordered file ?
Unordered file do no has any sequence although ordered file has arranged in a few sequence and data are assigned in ordered format.
The following variant of the primary copy asynchronous-update replication protocol has been proposed for totally replicated systems. (a) A transaction executing at site A updat
What are the two types of errors? The two types of errors are: a) Logical error b) System error
Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key. Ans: 3NF A relation is in 3 NF if an attribute of
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
Three way to handle missing field val
Explain the two types of participation constraint. Total: The participation of an entity set E in a relationship set R is said to be total if each entity in E participates i
In object oriented design, which steps must designer take to adjust inheritance? To readjust inheritance following steps should be taken: i) Rearrange and adjust the classe
Developer is required to do a task including: - Database Normalization - Database Analysis - ERM Diagram Details can be provided and then you can change your bid accord
What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.
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