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What are called multilevel indices?
Indices with two or more levels are known as multilevel indices.
What is property - properties of a database ? It is an integrated collection of logically related records. It consolidates separate files into a common pool of data records and
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Example- Search the salary of employees who are not 'ANALYST' but get a salary below than or equal to any people employed as 'ANALYST'. SELECT EMPNO, ENAME, JOB, SAL FROMEMP
A Functional dependency is described by X Y between two groups of attributes Y and X that are subsets of R specifies a constraint on the possible tuple that can make a relation
Explain the differences between structured data and unstructured data. Structured data are facts concerning objects and events. The most significant structured data are numeric
comparison of oracle RDBMS with MySQL
List some instances of collection types? a) sets b) arrays c) multisets
What is multiplicity in the associations? Give an example to explain multiplicity? Multiplicity in association indicate number of objects participate in any relationship. For
Determine the term- Active values An active value is that has dependent values. Every dependent value registers itself with active value that contains a set of dependent values
It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.
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