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Write short notes on relational model
The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an example of a record based model.
When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.
Hashed File Organisation Hashing is the most common form of purely random access to a database or file. It is also used to access columns that do not have an index as an optimi
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
sql is relationally complete-justify
Explain trivial dependency? Functional dependency of the form α ->β. is trivial if α C β. Trivial functional dependencies are satisfied by all the relations.
Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
Do NOT use the timestamp type. Use separate date and time data types only. Figure out how to define an SQL insert statement that uses built-in SQL (or MySQL) functions to define
entity relationship diagram about finance
define locking in simple language and decribed it
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