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Write short notes on relational model
The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an example of a record based model.
Winfield is a small city with a population of 22,000 with buses serves three routes in Winfield and neighboring areas. As the city’s IT director, you have been asked to set up an i
What is the use of integrity constraints? Integrity constraints make sure that changes made to the database by authorized users do not result in a loss of data consistency. The
1 NF Normal Form The domain of attribute must add only atomic (simple, indivisible) values First normal form (Minimal Form or 1NF) is a normal form need in database normalizat
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
Draw an EER diagram that captures the "is-a" hierarchy of students in another simple database. The database captures both the "basic" information (say, student ID and student name)
Discuss the term- Design Optimization We have seen various ways of representing the objects.The fundamental design model uses analysis model as the framework for implementati
An object-oriented design process 1. Define the context and modes 2. Designs the system architecture 3. Identifies the principal system objects 4. Identifies concurrency in
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined): 2160_Convert the following ER - diagram into a
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
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