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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
State the Object Design for Processing The object design phase comes after analysis and system design phase. The object design phase includes implementation details like as i
Explain concurrency control? Concurrency control Oracles multiversion concurrency control varies from the concurrency mechanism used by some other data base vendors. Read
Define an abstraction by which relationships are treated as higher level entities Ans: Aggregation. It is an abstraction by which relationships are treated as higher level
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
what is the relationship between receipt and owner entities in computer sales and service company
A database administrator''s responsibilities and data contents
Explain how the object classes are mapped to tables. Each object class maps to one or more than one tables in the database. The objects in the class may be partitioned horizont
Identification of concurrency Identification of concurrency: Dynamic model identifies concurrency. Two objects are said to be parallel (concurrent) if they can receive events a
Describe DROP TABLE command of SQL along with both the options - CASCADE and RESTRICT. DROP TABLE command - This command drops the specified table. Dropping a table also dro
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