Project Report of Electricity Billing System
Page - 42
Data Dictionary:
This is normally represented as the data about data. It is also termed as metadata
some times which gives the data about the data stored in the database. It defines each
data term encountered during the analysis and design of a new system. Data elements
can describe files or the processes.
Following are some major symbols
used in the data dictionary
= equivalent to
+ and
[] either/ or
() Optional entry
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