ECET 450: Laboratory 2 Lab 2 involves two parts. Part A involves normalizing a small part of a DB. The steps to complete this exercise include getting the data items into 1NF, 2NF, and 3NF. The final step is to generate the ERD for the table or tables that are in the dependency diagram in 3NF. Part B provides practice in the creation of realistic tables and their relationships using Oracle SQL*Plus and introduces writing SQL*Plus script files. This laboratory exercise creates a relatively simple invoice system using SQL statements. This DB schema is used throughout the next several weeks of laboratory exercises. The final product is an SQL script that makes it possible to initially create and re-create, if need be, the DB schema in order to do to the later laboratory exercises. Part A: Purpose: This exercise involves normalizing a small part of a DB. The steps to complete this exercise include getting the data items into 1NF, 2NF, and 3NF. The final step is to generate the ERD for the table or tables that are in the dependency diagram in 3NF. Discussion: Some small business wants to keep track of office furniture, computers, printers, etc. A sample of the ITEM records is shown below: ATTRIBUTE NAME SAMPLE VALUE SAMPLE VALUE SAMPLE VALUE ITEM_ID D1342245 D1453356 D1365779 ITEM_DESCRIPTION IQ Deskjet 683P IQ Toner DT Photocopier ROOM_NUMBER 227 227 342 BLDG_CODE SC SC ET BLDG_NAME Science Science Electronics Technology BLDG_MANAGER A. B. Jones A. B. Jones R. S. Smith Draw the dependency diagram using the data in the table. Make sure to label the transitive and partial dependencies. Using the dependency diagram developed in step 1, create a set of dependency diagrams that meet 3 rd Normal Form requirements. Rename attributes to meet the naming conventions. Create new entities and attributes as necessary. Draw the crow’s foot ERD with the VISIO drawing tool using the results of step 2. Part B: Purpose: This laboratory provides practice in the creation of realistic tables and their relationships using Oracle SQL*Plus and introduces writing SQL*Plus script files. This laboratory exercise creates a relatively simple invoice system using SQL statements. This DB schema is used throughout the next several weeks of laboratory exercises. The final product is an SQL script that makes it possible to initially create and re-create, if need be, the DB schema in order to do to the later laboratory exercises. Procedure: Using your assigned user name, password, and host string, log in to Oracle SQL*Plus. Record your dialog with a spool file. Following the four requirements below, create the 5 tables shown later in this laboratory exercise, and enter all data as shown. Be sure to record your interactions with SQL*Plus using the spool command. Use table names, attribute names, and data exactly as shown. The one exception is that you will omit the dollar sign and comma separators in the money amounts. Accurately enter the data as you will .