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What are the properties in a relation ?
In a relation Ordering of rows is immaterial and No two rows are identical.
Smart Alex Catering Sevice (SACS) is a company offering top class catering staff for prestigious events. The company employs approximately 200 hourly paid contact staff - chefs,
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
What do you understand by transitive dependencies? Define with an example any two problems that can take place in the database if transitive dependencies are available in the datab
Explain three main attributes of data.
What is Relational calculus? Relational calculus is a Non- Procedural language.
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
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
What do you understand by a view? What does WITH CHECK OPTION clause for a view do? - A view is a virtual table which comprises fields from one or more real tables. - It is
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