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Extend your CREATE TABLE statement from problem 3 with referential integrity constraints. Updates and deletes on related rows are restricted. 6. From examination of the sample data
Determine the Three Views of Data We know that the similar thing, if viewed from dissimilar angles produces difference sights. Similarly, the database that we have formed alrea
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 form
Ask questiwhat is row indicator in database on #Minimum 100 words accepted#
An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Describe Dynamic Model. The dynamic model specifies allowable sequences of changes to the objects from an object model. It contains event trace diagrams describing scenarios. A
what do you mean by consistency in rdbms?
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
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
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