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Define- relational algebra.
The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relation as output.
a set of possible data value of an attribute is called??
exercise solution
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
Design a gennalization and specialization hierarchy for an automobile sales company
Define DBA database administrator? DBA : A database administrator (DBA) is a person who is responsible for the environmental aspects of a database. In common, these involves:
what is lossless & dependency preserving decomposition ?
Express the properties of Strings? Strings can be case sensitive (or not) which can change the outcome of string operations. You can evaluate whole strings \ just part
Making Common Behaviour Abstract Let us define abstraction "Abstraction means to focus on the necessary, inherent aspects of an entity and ignoring its accidental features". O
Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people
I am going to develop a web site to present decision tree structure. For this, I want a web application with AJAX technology to connect the database and prepare the decision tree's
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