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E-R Model This data model is based on real world that consists of basic objects named entities and of relationship among these objects. Entities are illustrated in a database
explain five responsibilities of DBA?
You are required to implement integrity constraints within the database to enforce the following requirements: For Projects: Start date must be supplied. Start date cannot be i
DISADVANTAGES OF RDBMS
Question: This form represents one of a number used for each sailing of a range of boats. A passenger may go on many sailings and will have the same passenger number for each.
What type of view of total database content? Data base content Conceptual view of total database contain.
Assume that you are responsible for selecting a new DBMS product for Sohar Hospital
What is data definition language? Explain it in detail? The SQL DDL allows specification of not only a set of relations, but also information after each relation, containing
Give detail description on Transactions. - Using transactions we can group all SQL commands into a single unit. - Transaction begins with some task and finishes only when a
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
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