A specific database field in Table 1 both serves as a unique identifier in Table 2 and is used to link both of the tables as a relational database. What is the correct term for this database field in Table 2?
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- Suppose that you are a manufacturer of product ABC, which is composed of parts A, B, and C. Each time a new product ABC is created, it must be added to the product inventory, using the PROD_QOH in a table named PRODUCT. Also, each time the product is created, the parts inventory, using PART_QOH in a table named PART, must be reduced by one each of parts A, B, and C. The sample database contents are shown in Table P10.1. Given the preceding information, answer Questions a through e. How many database requests can you identify for an inventory update for both PRODUCT and PART? Using SQL, write each database request you identified in Step a. Write the complete transaction(s). Write the transaction log, using Table 10.1 as your template. Using the transaction log you created in Step d, trace its use in database recovery.Suppose that you are a manufacturer of product ABC, which is composed of parts A, B, and C. Each time a new product ABC is created, it must be added to the product inventory, using the PROD_QOH in a table named PRODUCT. Also, each time the product is created, the parts inventory, using PART_QOH in a table named PART, must be reduced by one each of parts A, B, and C. The sample database contents are shown in Table P10.1.Given the preceding information, answer Questions a through e.a. How many database requests can you identify for an inventory update for both PRODUCT and PART?b. Using SQL, write each database request you identified in Step a.c. Write the complete transaction(s).d. Write the transaction log, using Table 10.1 as your template.e. Using the transaction log you created in Step d, trace its use in database recovery.Given the following relation(s) and the functional dependencies, what is the highest normal form the data model complies to? Note: Primary keys are indicated in bold. TaxiRide (jobID, jobDateTime, driverID, driverName, taxiID, clientID, clientName, jobPickUpAddress)jobID -> jobDateTime, driverID, driverName, taxiID, clientID, clientName, jobPickUpAddressjobDateTime, driverID -> jobID, driverName, taxiID, clientID, clientName, jobPickUpAddressjobDateTime, taxiID -> jobID, driverID, driverName, clientID, clientName, jobPickUpAddressjobDateTime, clientID -> jobID, driverID, driverName, taxiID, clientName, jobPickUpAddressdriverID -> driverName, taxiIDclientID -> clientName A)1NF B)2NF C)3NF
- Define in SQL-like syntax a view of the engineering database V(ENO, ENAME, PNO, RESP), where the duration is 24. Is view V updatable? Assume that relations EMP and ASG are horizontally fragmented based on access frequencies as follows: Site 1 Site 2 Site 3 EMP1 EMP2 ASG1 ASG2 Where EMP1 = ?TITLE ≠“Engineer.”(EMP) EMP2 = ?TITLE =“Engineer.”(EMP) ASG1 = ?0 < DUR < 36(ASG) ASG2 = ?DUR ≥ 36(ASG) At which site(s) should the definition of V be stored without being fully replicated, to increase locality of reference?Assume that two students are attempting to enroll in a course with only one available seat. What characteristic of a database system prevents both students from obtaining the last open seat?Consider the following scenario: two students are attempting to enrol for a course in which there is only one opening. There is one available seat. What component of a database system prevents both students from completing their assignments? from being assigned to the final available seat?
- Complete a database design for both the CD Database problem and the Warehouse Problem. Display your normalized tables as demonstrated in the following format: TABLENAME(Field 1 (pk), Field 2, Field 3........)Consider the relational database below, where the primary keys are underlined.employee (person-name, street, city)works (person-name, company-name, salary)company (company-name, city)manages (person-name, manager-name)Give a query for each of the following:a Give all managers in database a 10 percent raise.b Give managers in the database a 10 percent raise, unless the salary would be greaterthan $100,000. In such cases, give only 3 percent raise.c Delete all tuples in the works relation for employees of Small Bank CorporationQUESTION 2 Consider the database schema below: Company (CompnayID: integer, CompnayName: String (unique), address) Department (DepartmentID: Integer, DepartmentName: String, CompanyID: Integer) Employee (ID:integer; name:String, DepartmentID:intger (not null)) How many candidate key(s) in the Employee relation?
- Given the following relational schema (Hint: the bold text represents a primary key), Professor(emp_num, emp_fname, emp_lname, emp_dob, dept_code, prof_ext)Class (class_code, course_code, class_section, class_time, class_room, emp_num)Course (course_code, course_name, crs_credits, dept_code) Write a relation algebra to find all "Database Design and Implementation" classes including section, time, room, and professor name (first name and last name). Hint: "Database Design and Implementation" is the course nameQ1:At this point, you have created a variety of database objects in your schema. Use an Oracle tool to identify all the direct and indirect dependencies on the BB_BASKET table, and produce dependency lists in two different formats. Identify each object as a direct or an indirect dependency, and describe the path of dependency for each indirectly dependent object.QUESTION 17 Consider the database schema below for cities in countries. A country have many cities, and the same city name can be found in different countries. Country (ID: integer, Name: String (unique)) City (serialNo: integer (unique, not null), CountryID: Integer, CityName: String, Population: integer) The same country name can be repeated with two different IDs in Country relation? No, violates key constraint. No, violates entity Integrity constraint No, violates domain constraints. No, violates referential integrity constraint. Yes.