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Explain data abstraction?
Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is constructed from more primitive data objects.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
A Structure of a dependency diagram
i am required to come up with entities relationships, optionality and cardinality from a scenario. there is a night club and bookings for a musician band
How can Redundant Associations be done It can be done by asking questions: i) Is there a specific arrangement of network which would optimize critical aspects of completed
About Attribute inheritance
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
Design Documentation The Design Document shall be an extension of Requirements Analysis Design. "The Design Document will comprise a revised and much more detailed descrip
the of super market system done in database
Mention the type of constraints we can specify in the CREATE command of DDL. The type of constraints that can be specified are as follows:- PRIMARY KEY, NOT NULL, UNIQUE, FOR
What is OLTP (Online Transaction Processing)? In OLTP - online transaction processing systems relational database design use the discipline of data modeling and generally follo
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