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What Is Sql? Structured Query Language (SQL) is a standard query language. It is usually used with all relational databases for data manipulation and definition. All the re
Consider the subsequent relations RENTER(rno, fname, lname, address, tel_no, pref_type, max_rent) VIEWING(rno, pno, date, comment) PROPERTY_FOR_RENT( pno, street, area ,city,
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
In which format database schema is written ? Data base schema is written in the DDL format.
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
the of super market system done in database
Define Physical and Logical independence Ans: Physical data independence: The ability to modify physical level without causing application program to be rewritten. Logic
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
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