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What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
You are managing the following database system: • DBMS: Oracle 11g • OS: Sun Solaris • System architecture: Web-based application using ASP.Net • Purpose of Server: HR managem
Give the two reasons for allowing concurrency
Update Operations and Dealing with Constraint Violations There are three basic operations to be executes on relations: Insertion Deletion Update The INSER
what is file organization? what are file organization techniques.explain in detail? explain random file organization technique, multikey file organization technique?what is indexin
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
each publisher has uniqe name a mial addrs are also kept on each pubisher.a publisher publish one book.a book publish y one publisher.book identified by isbn.each book writn by one
Explain hash file organization? Hash functions a) The distribution is uniform Hash functions assign each bucket the similar number of search -key values from the set of a
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