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What is vertical fragmentation?
Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
discuss the array implementation of a stack.
Inconsistent Analysis : The problem as given with transactions T1 and T2 where two transactions interleave to make incorrect result during an analysis by Audit is the instance of s
Explain the integrity constraints: Not Null, Unique, Primary Key with an example each. Is the combination 'Not Null, Primary Key' a valid combination. Justify. Not Null - Shou
Define Serializable schedule Serializable schedule: An interleaved schedule of much more than one transaction is known as a serializable schedule, if it is equal to some serial
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Ancestry database records information about family trees . Following information is recorded about each person: FIRSTNAME first name SURNAME surname MNAME maiden name (if
please describe the data base management with the easy example &give the application?
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
What is a query tree? Ans: A query tree, as well known as operator graph, is a tree data structure that corresponds to a relational algebra expression. It denotes the inpu
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
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