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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 are object interaction diagrams? Object interaction diagrams are the diagrams that used to describe order in which messages are communicated in execution of an operation,
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
The Conceptual Level or Global level The conceptual level presents a logical view of the complete database as a unified whole. It permits the user to bring all the data in th
Define cardinality and participation constraints on a relationship type, completeness constraint on generalization. Ans: Cardinality defines the number of entities to wh
Draw an E_R Model for the following: An organization uses number of items of a equipment to generates goods. Each item is at one LOCATION, of one TYPE and has a DETAILED_DISCRI
A database administrator''s responsibilities and data contents
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
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