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Explain controlled redundancy?
Controlled redundancy : The replication of data within the data warehouse for the purposes of improved data access or understand ability.
What do you mean by persistence? How you will make your data persistent? Persistent data is the data, which has a longer lifetime than program which has created it. Enabling th
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
Explain the Log Based Recovery Method? The system log that is generally written on stable storage consists of the redundant data required to recover from volatile storage failu
a method named WonGame that checks each letter in the word is matched by its label
Describe the Association: Design Before we describe association design let us define association "Association is set of links between two objects in the object model". It is
(a) Provide the description of the following ODMG schema in the Object Definition Language (ODL). (b) Based on the above object database, write the following queries i
When are they useful? Justify with an example. The temporary tables are commonly used to support specialized rollups or exact application processing needs. Unlike a permanent t
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest level of abs
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
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