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Express types of information available in MySQL?
Information as regards the result of queries:
This includes number of records affected by any SELECT or UPDATE or DELETE statement.
Information as regards tables and databases: This includes information pertaining to the structure of Databases and table. Information regarding the MySQL server: This includes present status of database server and version and number etc
Explain the integrity constraints: Not Null, Unique, Primary Key with an example each. Is the combination 'Not Null, Primary Key' a valid combination. Justify. Not Null - Shou
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Question: (a) Why is it important to know the architecture rather than to start requirement capture when designing a large scale system? (b) Who are the different people in
WHAT IS DATABASE TECHNOLOGIES
Explain three main attributes of data.
explain the steps for reduction of er model into relational model?
explaination
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
If R1 and R2 are two relations or functions, then the result of R3 = R1 × R2 is the combination of tuples that are in R1 and R2. The product is associative and commutative. Degr
List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
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