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Given the subsequent relations:
vehicle (reg_no, make, colour)
Person (eno, name, address)
Owner (eno, reg_no)
Write expressions in relational algebra to answer the subsequent questions:
(i) List the names of persons who do not own any type of car.
(ii) List the names of persons who own just only Maruti Cars.
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
Submit SQL INSERT Statements that will populate the database with sample data. You must insert at least 5 records into each table in your database.Submit your SQL INSERT Statement
Describe the candidate key functions ? Candidate Key and Alternate Key: In some instances, an entity will have more than one attribute which can serve as a primary key. Any key
What is the function of IO/M signal in the 8085? It is a status signal. It is used to differentiate among memory locations and I/O operations. When this signal is low (IO/M = 0
Benefits of Sequential File Organisation It is quick and efficient when dealing with huge volumes of data that require being processed periodically (batch system). Dra
Project Description: This is a Customer Management project. Customer data is presented in a text file. The program can load this text data into its database columns. The data ma
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
In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
Preliminary entities and attributes of human resourse management database management system
Example -GRANT CREATE SESSION TO MCA12; (This command gives system level permission on creating a session - not portable) GRANT SELECT ON EMP TO MCA12; (Object level permi
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