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Determine the concept of Process
Process: A process transforms the data values. It is represented as ellipse containing a description of transformation. Each procedure has a fixed number of the input and output data arrows; each of them carries a value of a given type.
List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
Define various ways in which SELECT statement can be used for record selection Technology? SELECT gives you control over a number of aspects for record retrieval: 1) Which
What is NULL? Give an example to described testing for NULL in SQL? The NULL SQL keyword is used to represent either a missing value or a value which is not applicable in a re
Explain the use of constraints in functional model with suitable example. A constraint shows relationship between two objects at same time, or among various values of the sam
Question: Describe briefly the three parts of the Relational Model. (a) The term integrity refers to the accuracy or correctness of the data in the database. Define the fol
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.
explain at least five widly used case tools
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
In the ER diagram, one example of subclassing is depicted following the Services entity. The subclasses Item Based and Time Based are created. The entity Services gains the attribu
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