Can someone please help me with a Database Design Lab

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

 

1. Draw the dependency diagram using the data in the table.  Make sure to label the transitive and partial dependencies.
2. 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.
3. 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.

1. 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 need these tables in future laboratory assignments.

 

1. Save all of your commands in a single script file for printing and submission. This file should each contain a minimum of your name and the date in comments at the beginning of the file, and any other comments you feel add to the understanding of the script file.  Copy and edit your spool file to create the load_tablesXXX.sql file where XXX are your initials.  The only items that should be in this load_tablesXXX.sql file are your comments and the SQL statements that drop tables, create tables, insert data values, and display table.  Be sure to remove all incorrect commands and the Oracle responses to the correct commands from the file.  Save this file for the future in case you have to rebuild these tables.  Be sure to include a printout of this file in your report.

 

1. The second submission requirement is a printout of each of the 5 tables completely loaded with the specified data.  Use the SET LINESIZE command to avoid line wrap around of your table data.  Print your list file in landscape mode.

 

1. All primary key and foreign key constraints should be named according to the method presented in the classroom.  If you have any questions about which attributes are primary and/or foreign keys, please ask about them.

 

1. The ultimate test is the execution of this SQL script file in the following form:                       @ <path_name>/load_tablesXXX.sql

 

 

<First Page of tables>

REP Table

REP_ID	REP_LNAME	REP_FNAME	REP_STREET	REP_CITY	REP_STATE	REP_ZIP	REP_COMM	REP_RATE
223	Roma	Theresa	735 First	Leonard	GA	25742	$21,756.50	0.06
237	Miller	Fred	643 High	Sheldon	GA	25753	$38,612.00	0.08
268	Rodriguez	Miguel	2737 Tyler	Springfield	GA	25758	$19,774.00	0.06

 

 

 

CUSTOMER Table

 

CUST_ID	CUST_NAME	CUST_STREET	CUST_CITY	CUST_STATE	CUST_ZIP	CUST_BALANCE	CUST_LIMIT	REP_ID
1159	Charles Appliance and Sport	3948 Brown	Leonard	GA	25742	$5,560.00	$7,500.00	223
1193	Streaming Direct	4938 Maple	Grove	GA	25721	$210.40	$10,000.00	237
1367	Hollister’s	493 Oakwood	Farmerville	GA	25546	$6896.00	$7,500.00	268
1419	Everything Sports Shop	2939 Cardinal	Crystal	GA	25503	$5,396.36	$5,000.00	237
1462	Bargain House	4930 Main	Grove	GA	25721	$4,523.00	$10,000.00	268
1524	Jackson’s	946 Second	Leonard	GA	25742	$13,817.00	$15,000.00	223
1619	Murray’s Department Store	483 Cambridge	Sheldon	GA	25753	$2,217.00	$10,000.00	268
1687	Lawrence Sport and Appliance	393 Jefferson	Lafayette	GA	25752	$3,962.00	$5,000.00	237
1725	Dustin’s All Seasons	171 Washington	Sheldon	GA	25753	$359.00	$7,500.00	237
1842	Four Seasons Store	19 Front	Grove	GA	25721	$8,113.00	$7,500.00	223
1873	Suburban Appliance	128 High	Springfield	GA	25758	$1257.50	$5,000.00	268

 

PRODUCT Table

 

 

INVOICE Table

 

 

 

LINE Table