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What is the use of integrity constraints? Integrity constraints make sure that changes made to the database by authorized users do not result in a loss of data consistency. The
why are older data base model are being replaced by new data model
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
What is system log? What are the entries? Ans: The system log that is generally written on stable storage contains the redundant data required to recover from volatile
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
List the SQL domain Types? SQL supports the following domain types. 1) Char(n) 2) varchar(n) 3) int 4) numeric(p,d) 5) float(n) 6) date.
what is inverted and multilist structure
Compare the two log-based recovery schemes in terms of ease of implementation and overhead cost. Ans: There are two types of log based recovery techniques: deferred update
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