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Which database object does not physically exist? A view database object does not physically exist.
Ask Write the SQL code that will create the table structure for a table named EMP _1. This table is a subset of the EMPLOYEE table. The basic EMP_1 table structure is summarized in
Define null values. In some cases a certain entity may not have an applicable value for an attribute or if we do not know the value of an attribute for a certain entity. In the
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
What are called jukebox systems? Jukebox systems have a few drives and numerous disks that can be loaded into single of the drives automatically.
.#question. Discuss the problem which may arise during concurrency control and recovery in distributed database which are not encountered in controlized database environment.
Ask questiwhat is row indicator in database on #Minimum 100 words accepted#
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
diagrams and meaning
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