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What is a shadow copy scheme?
It is simple, but efficient, scheme known as the shadow copy schemes. It is based on making copies of the database called shadow copies that single transaction is active at a time. The scheme also supposes that the database is simply a file on disk.
Explain the EXEC statement in SQL Ans: All statements which start with EXEC SQL are embedded SQL database statements. High level languages such as C can be employed to write a
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Question: (a) List four disadvantages of the File Processing System as compared to the Database Systems. (b) The integrity of a database is enforced by integrity rules. One
What are the responsibility of File manager? File Manager : Manager allocation of space on disk storage and the data structures used to represent within stored on disk. It is a
write-set(T): Each data items that are written by a transaction T
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
Design a gennalization and specialization hierarchy for an automobile sales company
Client Server Databases- The concept behind the Client/Server systems is simultaneous, cooperative processing. It is an approach that presents a one systems view from a user's vie
limitations and benefits in database tecknowlagy
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
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