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What is OLTP (Online Transaction Processing)?
In OLTP - online transaction processing systems relational database design use the discipline of data modeling and generally follow the Codd rules of data normalization in order to make sure absolute data integrity. Using these rules complex information is broken down into its most easy structures (a table) where all of the individual atomic level elements relate to each other and satisfy the normalization rules.
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
Security And Integrity After Reading the concepts of database recovery in the last section, let us now deal with a vital concept that helps in minimizing consistency errors in
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What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a
Differentiate between various levels of data abstraction? Data Abstraction - Abstraction is the procedure to hide the irrelevant things from the users and represent the rele
give some example real-life situations where DBMS are most suiitabe
Which method of access uses key transformation? A Hash method of access uses key transformation.
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Super keys of a relation can have extra attributes. Candidate keys are minimal super key, i.e. such a key have no extraneous attribute. An attribute is known as extraneous if even
Define multivalued dependency and 4NF. Ans: Multivalued Dependency - Assume R be a relation schema and let α ⊆ R and β ⊆ R. The multivalued dependency α →→β holds o
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