1.What is a database? a) Organized collection of information that cannot be accessed, updated, and managed b) Collection of data or ...
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1.What is a database? a) Organized collection of information that cannot be accessed, updated, and managed
To Which of the following the term ‘DBA’ referred | What does DBA stand for in computer science | DBA full form in computerTo Which of the following the term ‘DBA’ referred?or/What does DBA stand for in computer science?a. ...
Consider the following schema: Emp(eno,ename,ph_no,address,salary,dno) Department(dno,dname,location) Project(pno, dno,status) Works_On(eno,pno,hours) Solve the following queries using Relational Algebra operations a. List eno and dno from Emp where dno as ’20’ b. List eno,ename,dno,dname from Emp and Department. c. List eno,ename,pno from Emp and ...
There are three relations in the following schema for the company: 1. EMPLOYEE (National_ID, Employee_Name, Salary, Service_Unit), 2. EMPLOYER (National_ID, Employer_Name, Salary, Service_Unit), 3. UNIT (Service_Unit, Contact_Phone_Number). Primary key has been underlined. The data stored in the schema has been ...
