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#question.what is mapping constraints and types?.
explain in detail about crash recovery
case study
How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
explain normalisation
Whenever the LIMIT clause will be used? LIMIT is used for the following kinds of problems: 1) Answering questions about first or last and largest or smallest 2) Splitting
With the help of an example display how records can be deleted and updated in QBE. (i) Increase Pay_Rate of employees along with the skill of ‘cook' by 10%. (ii) Delete employee
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
Which component is not included in database environment ? A users component is not included in database environment.
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
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