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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
can you resolve this for me please? Database Management Systems Homework 1 The following relations are given (primary keys are underlined): PLAY-ACTOR(AId, Name, Nationality, Birt
Our company hires independent contractors to install equipment at precise locations across North America. We want to track the installation data and generate reports. The compan
Types of Data fragmentation
Why is need for the multiple access paths?
What is an Index? An index is a small table having only two columns. The first column has a copy of the primary or candidate key of a table and the second column having a set o
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
Question: Describe briefly the three parts of the Relational Model. (a) The term integrity refers to the accuracy or correctness of the data in the database. Define the fol
i need help for assignment ..
Explain the Relational Completeness Codd described the term relational completeness to consider to a language that is complete with respect to first-order predicate calculus ex
Discuss deferred update technique of recovery. What are the advantages? Ans: The deferred update methods do not physically update the database on disk till after a transact
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