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One-way Associations
When an association is traversed only in the one direction, then it is implemented as a pointer i.e.an attribute which contains an object reference. If multiplicity is 'one' as shown in Figure, then it is simple pointer, otherwise it is a set of pointers.
Figure: Implementation of a one-way association using pointers
Isolation or Independence : The isolation property shows that the updates of a transaction should not be visible till they are committed. Isolation assurance that the progresses of
Which two tools are used to administer users for Active Directory?
What is called a query evaluation plan? A sequence of primitive operations that can be used to assess a query is a query evaluation plan or a query implementation plan.
You are to write a property management database program that allows a real estate agent to view, add, search, and save property listings. The program is to do the following: 1.
Ask qu. Write a XML with database with book details (Book ID, Title, Author, subject, published year, language, vendor, and price).estion #Minimum 100 words accepted#
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In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
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Database design Database tables will be created for you on the Technology web server. The schema will be as follows. Please note that this is a simplified database structure, d
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