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What is transaction?
Collections of operations that form a single logical unit of work are known as transactions.
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
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
OBJECTIVES After going through this unit you should be capable to: Explain the File Based system and its limitations; Explain the structure of DBMS; Explain the
Objectives After Reading this part, you should be able to: Explain the term CONCURRENCY; Describe the term transaction and concurrent transactions; Talk about co
What is Data dictionary? A data dictionary is a reserved space in a database that is employed to store information about the database itself. A data dictionary may consist o
1) Information about a bank is about customers and their account. Customer has a name, address which consists of house number, area and city, and one or more phone numbers. Ac
Enumerate or state the steps in creating a relevant database of a shop.
notes about update opreation
A database will be made to store information about patients in a hospital. On arrival, each patient’s personal details (name, address, and telephone number) are recorded where poss
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
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