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Package classes and associations into models
Programs are made of separate physical units which could be edited, imported, complied or otherwise manipulated. The careful partitioning of an implementation into package is significant for group work on the program. Packaging has the following issues:
a. Information hiding
b. Collection of entities
c. Constructing physical modules with strong coupling with each other module.
entity relationship diagram for online examination system
what should be included in this???
Question 1 Define OLTP? Explain the Differences between OLTP and Data Warehouse Question 2 What is Architecture? Explain various components involved in it Question
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
what do you mean by consistency in rdbms?
Discuss the count function? The COUNT function used returns the number of tuples or values fixed in a query. The count function comprises two types of syntax: (1) COUNT (*)
Explain the concept of QBE? Query-by-example represents a visual/graphical approach for accessing information in a database by the use of query templates called as skeleton tab
random file sharing
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
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