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Give a sample of the Dynamic Model.
The sample of dynamic model is given below:
Dynamic model for the car:
Brake and Accelerator Brake or Applies Accelerator
Accelerator Applies an Accelerator
Brake Applies the Brake
off Put off car
on Put on car
press acc is a function
rel accl
press brak
rel brak
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
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
how to find entities
random file orgnization
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
Define single valued and multivalued attributes. Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes. M
Explain briefly concurrent task by taking an example. Concurrent Task- The concurrent occurrence of more than one event is called concurrent task. Operating systems can handl
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
Explain the main advantages of DBMS over File Oriented System ?
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
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