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What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
The State of NewYork certifies firefighters throughout state and keep track all of them, as well as of the state’s fire departments. Each fire department has unique department numb
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
I want a professional with strong IT background who provide me timely assignments Project Description: I want a professional who can do my assignments for my major i.e. Infor
Describe Database state in details? Database state: The actual data within the database at a particular moment in time is known as a database state.
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
In which format database schema is written ? Data base schema is written in the DDL format.
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