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What is key ?
Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is called as key.
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
Define the Traditional System Analysis and Design Traditional System Analysis and Design (SAD) have three basic life cycle models. A typical software lifecycle consists of the
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
What is a value? A data value is used for identity. This form of identity is used in relational systems.eg: The primary key value of a tuple recognize the tuple.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
1. Define and discuss Work Breakdown Structure, Critical Path Analysis, PERT charts and GANTT charts. Describe the role of each in determining scope, budgets, and schedules? What
Enumerate or state the steps in creating a relevant database of a shop.
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
Object Oriented model :An object has values stored in instance variables within the object. An object also has bodies of code that execute on the object. These bodies of code are
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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