• Given the following Relations in a DBMS write the output of the queries, in tuple form with attribute labels. EMPLOYEE Fname Minit Lname John Franklin Alicia Jennifer Ramesh K Narayan 666884444 1962-09-15 975 Fire Oak, Humble, TX M 38000 333445555 Joyce Ssn Bdate Address Sex Salary Super_ssn Dno в | Smith I Wong JZelaya 99887777 1968-01-19 3321 Castle, Spring, TX s Wallace 987654321 1941-06-20 291 Berry, Bellaire, TX 123456789 1965-01-00 731 Fondren, Houston, TX M 30000 333445555 333445555 1955-12-08 638 Voss, Houston, TX M 40000 888665555 F 25000 087654321 F 43000 888665555 4 4 A English 453453453 1972-07-31 5631 Rice, Houston, TX F 25000 333445555 v Jabbar 987987987 | 1969-03-29 980 Dallas, Houston, TX M 25000 087654321 E Borg Ahmad 4 James 888665555 1937-11-10 450 Stone, Houston, TX M 55000 |NULL 1 DEPARTMENT DEPT_LOCATIONS Dname Dnumber Mgr_ssn 333445555 Mgr_start_date Dnumber Dlocation Research 5 1988-05-22 Houston Administration 4 987654321 1995-01-01 4 Stafford Headquarters 888665555 1981-06-19 Bellaire PROJECT 5 Sugarland Pname Pnumber Plocation Dnum 5 Houston ProductX Bollaire 5 ProductY 2 Sugarland 5 Productz 3 Houston Computerization Reorganization Newbenefits 10 Stafford 4 20 Houston 30 Stafford Query 1: SELECT Pnumber, Dnum, Lname, Address, Bdate FROM PROJECT, DEPARTMENT, EMPLOYEE WHERE Dnum=Dnumber AND Mgr_ssn=Ssn AND Plocation='Stafford' Query 2: SELECT E.Fname, E.Lname, S.Fname, S.Lname FROM EMPLOYEE AS E, EMPLOYEE AS S WHERE E.Super_ssn=S.Ssn

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Fundamentals of Datawarehouse

A data warehouse is a data repository which is used to store large quantities of historical data that are mostly used for creating reports that help businesses to identify their weaknesses and strengths. For example, demographics data about people of a region can help businesses identify the needs and preferences of the region’s population. A data warehouse acts as a central storage for storing data that comes from one or more heterogenous sources. It also consists of data which can be old and of historical value. One of the most important applications of this type of system is that it is used for supporting business intelligence and data analytics applications.