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Problem
1. Write the SQL queries using Data Manipulation Language (DML) statements.
>> Writing SQL using DML for each part:
2. Create the payroll database considering table employee.
1. Do simple queries on the above database.
i. list all information of the above both tables.
ii. list the empno, ename, jobtitle,and hiredate of employee from the employee table.
2. list the name, salary of the employees who are clerks. 3. list the name,job,salary of every employee joined on certain date. (say ‘december 17,1980') 4. list name and annual salary of all the employees. 5. list the employees who have salary between certain range (say between Rs. 1000 & 2000)
>> Creating database according to 5 subparts
does tables are called relations
What is multiple relationship ?
The Update Operations : Update operations are used for altering database values. The constraint violations faced by this operation are logically the similar as the problem faced
Primary Key The primary key is the candidate key that is selected by the database designer as the principal denotes of identifying entities within an entity set. The left candi
Partial Key : It is a group of attributes that can uniquely identify small entities and that are related to same base entity. It is sometime named as Discriminator. Altern
Define the Attribute Inheritance The attributes of a higher level entity set are inherited through a lower level entity set made by specialization-generalization hierarchy. Nam
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
Define Specialisation and generalization in brief? Specialisation / generalization: Generalization or Specialization represents the is a relationship set, an necessary element
Benefits and Limitations od Data Models?
Suppose an instruction takes 1 nanosecond to execute (on average), a page fault takes 20 microseconds of processor time, and it takes 300 microseconds of disk time to read or write
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