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what is 3nf
1. Item based services will be charged fixed prices, and time-based will be charged variably depending on time. Such as per hour. Item-based: Fixed, pedicure, waxing, threading, fa
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Describe Graphical User Interface? Graphical User Interfaces (GUIs) - A GUI typically displays a schema to the user in diagrammatic form. The user can then specify a query th
how map binary relation one to one
What is magnetic disks?explain it? Magnetic disk provides the bulk of secondary storage of modern computer system. The disk capacity is growing at over 50% per year. But the st
differences between a classified catalog and a dictionary catalog
What is Alternate Key Alternate Key: This is the candidate key which is not taken as the primary key of the table. They are named so because although not the primary key, the
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
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