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what is data link layer
An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not? If relational schema R (A, B, C) has distinct val
please give me introduction to full data in D B M S in a short assignment
Create a Student database and Retrieve the names of all students majoring in ‘CS' Consider the following relational database: STUDENT (name, student#, class, major) COURSE (co
East Coast Aquarium Relational Database
While using extract datasets it is required to have a special workarea for interface False. It is not required to have a special workarea for interface
as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen
By using the delete operation some consisting records can be deleted from a relation. To delete some definite records from the database a condition is also specified based on which
Exclusive lock It is asked for by a transaction on a data item that it wants to update. No other transaction can put either a shared lock or an exclusive lock on a dat
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
What are the benefits of OOA technology? Using OOA technology can produce many benefits, such as: i) Reusability of code ii) Productivity is gained through direct mappi
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