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What is meant by normalization of data?
It is a process of examining the given relation schemas based on their Functional Dependencies (FDs) and primary key to achieve the properties
Minimizing redundancy
Minimizing insertion
deletion and
updating anomalies.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
discuss the purpose of the concurrency control?
How can we Classify the operations on classes This step fundamentally means all three models functional, object and dynamic (studied in last section) must be combined so that
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
Describe the definition of a transaction in SQL Ans: The SQL transaction starts implicitly. Transactions are finished by either Commit work that commits the transaction and st
Having clause This clause is used for producing conditions on grouped information. Example: Find maximum salary and department number of those departments where maxim
how to design tables
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
growing phase and shrinking phase are disjoint, why ?
In an organization several projects are undertaken. Each project can employ one or more employees. Each employee can work on one or more projects. Each project is undertaken on the
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