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What is meant by software and hardware RAID systems?
RAID can be executed with no change at the hardware level, using only software modification. Such RAID implementations are known as software RAID systems and the systems with special hardware support are known as hardware RAID systems.
Cardinality of Relationship One-to-One Only one entity of the first set is linked to only one entity of the second set. E.g. A teacher teaches a student. Only one teacher
INTRODUCTION Databases and database systems have become an essential part of our daily life. We encounter many activities that involve some interaction with a database almost
What is relationship? Give examples A relationship is an association between several entities. Example: A depositor relationship associates a customer with every account tha
Aggregate functions Some of these functions are min, count, max, and avg. These functions help in getting consolidated information from a set of tuples. Example:
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
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Write short notes on Schema diagram. A database schema along with primary key and foreign key dependencies can be depicted pictorially by schema diagram. Every relation appea
Lack of Redundancy We have talked about the problems of repetition of information in a database. Such repetition should be stay away as much as possible. Let us state once again t
Explain the conventions (relationships) for displaying an ER schema as an ER diagram.
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
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