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Define Database layer?
The database layer defines the data formats used in the database.
what is primary key
Define single valued and multivalued attributes. Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes. M
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
1. Use the Invoice table structure shown below to answer the following questions: a) Draw the dependency diagram and identify the primary key and all dependencies, including al
Deadlock Prevention One of the easiest approaches for avoiding a deadlock would be to obtain all the locks at the begin of the transaction. Though, this approach restricts conc
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
Describe the host language? Host Language: You could write applications along with SQL statements embedded inside a host language. The SQL statements give the database inter
basic structure of xml
What is Index? An index is a physical structure having pointers to the data. Indices are created in an existing table to locate rows more quickly and efficiently. It is possibl
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
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