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Q. Classes of data items in a data dictionary?
There are three classes of data items in a data dictionary
1) Data element- It is the smallest unit of data that cannot be meaningfully decomposed further. Example- Employee number and so on.
2) Data structure is a group of data elements forms a data structure.
3) Data Flows as well as Data Stores- data flows are data structures in motion whereas data stores are data structures at rest.
Application Design: Micro CDS/ISIS is a text oriented software package. It is a good , ho ice if one wishes to store textual data, retrieve the data by certain criteria, and d
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m2+m3+m5+m7+m12+m8+m9 simplify using k-map
Processes and procedures make sure the correct steps are being implemented to facilitate a successful finished off a task. They also make sure a process is repeatable.
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Define about the erroneous data - Test data Abnormal/erroneous data - This is data outside the limits of validity/acceptability and must cause an error message to be g
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