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Create a view emp_dep containing e_name and number of dependents from the tables employee and dependent of (i)
CREATE VIEW emp_dept AS SELECT ename, COUNT(*) FROM employee, dependent WHERE employee.e_no = dependant.e_no GROUP BY e_name;
Which database object does not physically exist? A view database object does not physically exist.
Designing the fields in the data base The following are the considerations one has to remain in mind while designing the fields in the data base. Coding, compression, en
Explain the term - Control as Concurrent Tasks As we know, any object can be implemented as a task in programming language or operating system. This is the most general approa
(A) For the relation; CarSales (RegNo, BuyerName, Address, SalesPerson, Make, Model, Commission) The following functional dependences hold, RegNo _ID à Make, Model Reg
Run the following queries. For each query show 1) What you expect the output to be based upon the data 2) the SQL code and 3) the output running the query in Oracle. 1. Show all c
Using Column aliases Example: To print column names as NAME and ANNUAL SALARY SELECT ENAME "NAME", SAL*12 "ANNUAL SALARY" FROM EMP;
Consider the ER schema below for the MoneyMaking supermarket chain problem. Translate the given ER schema into SQL CREATE TABLE statement.
In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
What type of view of total database content? Data base content Conceptual view of total database contain.
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