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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
Define a relation ? Relation - A relations is a named two-dimensional table of data. Mathematically, a relation can be described as a subset of the cartesian product of a lis
When are they useful? Justify with an example. The temporary tables are commonly used to support specialized rollups or exact application processing needs. Unlike a permanent t
Types of Data fragmentation
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
Derived horizontal fragmentation: Some applications may include a join of two or more relations. If the relations are stored at dissimilar locations, there may be a major overhead
Differance between DDL and SDL? DDL and SDL - The data definition language (DDL) is used through DBA and database designers to describe internal schema, conceptual schema, and
Normalize the given relation to 3NF, justifying each step
triggering
How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
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