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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
Consider entity type Employee with attributes empNumber (this is unique), empName, and the year when he/she was hired. An employee can either be a technical employee, a marketing e
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.
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
Explain outer join? Outer Join - If there are any values in one table which do not have corresponding value(s) in the other, in an equi-join which will not be chosen. Such ro
recovey techniques based on deferred update and immediate update
what is primary key
random file sharing
What are the advantages of creating a table from existing table?
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
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