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What are the technique to define a schema completely ?
A schema is completely define by DDL and DML query language.
Explain the two constraints, check and foreign key in SQL along with an example for each. Give the syntax. CHECK constraint - CHECK constraint specifies an expression which
please describe the data base management with the easy example &give the application?
Increased overheads on update : On the drawbacks side, it will need the system to ensure that all replicas of a relation are consistent. This shows that all the replicas of the rel
Define Forms Based Interfaces? Forms-Based Interfaces - A forms-based interface display a form to each user. Forms are commonly designed and programmed for naive users and inte
This project will involve designing and creating a database for an organization. In the design of a database, there is no single "perfect" design. So your database design may not
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
what is cascading rollback
In a relational model how relations are termed? In a relational model, relations are termed as tables. (The term ‘relation’ is the technical name of the ‘table’ in RDBMS)
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
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