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There are 6 questions listed below. Based on the content in the M05 Readings, answer each question. After completing, save and executing your scripts in Oracle Application Express.
https://apex.oracle.com/pls/apex/f?p=4550:1:95346704569:::::
Upload a copy of each of your scripts to IvyLearn.
- M05_LastNameFirstName_CreateTables
- M05_LastNameFirstName_Constraints
- M05_LastNameFirstName_Alter
- M05_LastNameFirstName_InsertInto
- M05_LastNameFirstName_Update
*Note: For fields that exist in multiple tables, data type and size should be the same (i.e. ProjDeptID exists in ProjDept, Employee, and Task tables; the datatype for the ProjDeptID in each of these tables should be the same). When creating tables, consider data that is dependent on each other (i.e. primary key fields must always be created before foreign keys can reference them). For the data entry is time-consuming; be sure to allow enough time to complete the data entry portion of this assignment. To successfully insert your statements, use the same table names that were used when creating the tables for this assignment. When entering data, consider data that is dependent on each other (i.e. primary key data must always be added before foreign keys). Required fields must have data.
(40 points) Based on the Entity-Relationship Diagram (shown on page 3) for the Employee Projects Database, complete the following:
- Write the SQL statements for creating the tables for the Employee Projects Database. Save these statements in a script called M05_LastNameFirstName_CreateTables (where LastName is your last name and FirstName is your first name). Run/execute these commands in Oracle Application Express. Upload a copy of your script to IvyLearn.
- ID fields use NUMBER(x) datatype
- Date fields use DATE datatype
- Any field that will be a string use the VARCHAR2(x) datatype, where x is the appropriate size of the field
- To assist with choosing sizes for the datatypes, some examples of the data for each table created can be found on the last page of this assignment.
- Write the SQL statements for altering the tables in the Employee Projects Database to define the primary key and foreign key constraints. Save these statements in a script called M05_LastNameFirstName_Constraints (where LastName is your last name and FirstName is your first name). Run/execute these commands in Oracle Application Express. Upload a copy of your script to IvyLearn. If the primary key and foreign key constraints have been created in the previous script, ignore this step.
- Write the SQL statements for the altering the following tables. Save these statements in a script called M05_LastNameFirstName_Alter (where LastName is your last name and FirstName is your first name). Run/execute these commands in Oracle Application Express. Upload a copy of your script to IvyLearn.
- Employee – add a unique column that holds an email address
- Create the SQL DML statements for inserting rows of data into the tables for the Employee Projects Database. Save these statements in a script called M05_LastNameFirstName_InsertInto (where LastName is your last name and FirstName is your first name). Run/execute these commands in Oracle Application Express. Upload a copy of your script to IvyLearn.
- Create the SQL DML statements for updating the task details in the Project Task table in the Employee Projects Database. Save these statements in a script called M05_LastNameFirstName_Update (where LastName is your last name and FirstName is your first name). Run/execute these commands in Oracle Application Express. Upload a copy of your script to IvyLearn.
- In each script created above, include the following comments:
- At the beginning of the script include your name, the date, and the name of the script and a summary of what the script will do.
- Throughout the script, include comments to describe briefly what each section of script will do.
For fields that are marked as *, these are required/mandatory fields.
For fields that are marked as °, these are optional fields.
Primary key and foreign key fields have been labelled accordingly.
ProjDept Data
| ProjDeptID | ProjDeptName | OfficeLocation | PhoneNumber |
| 1001 | Accounting | ITCC01-400 | 888-285-8100 |
| 2001 | Human Resources | ITCC01-200 | 888-285-8200 |
| 3001 | Marketing | ITCC02-300 | 888-285-8300 |
| 4001 | Information Technology | ITCC02-100 | 888-285-8400 |
| 5001 | Legal | ITCC01-100 | 888-285-8500 |
Employee Data
| EmployeeID | FirstName | LastName | ProjDeptID | PhoneNumber | |
| 10 | Mark | Columbus | 1001 | 888-285-8101 | mark@itcc.com |
| 29 | Elvin | Wahl | 2001 | 888-285-8201 | elvin@itcc.com |
| 38 | Taylor | Noel | 3001 | 888-285-8303 | taylor@itcc.com |
| 47 | Ariel | Colby | 4001 | 888-285-8401 | ariel@itcc.com |
| 56 | Riley | Peterson | 4001 | 888-285-8402 | riley@itcc.com |
| 65 | Terence | Ferdinand | 1001 | 888-285-8102 | terence@itcc.com |
| 74 | Bryce | Daley | 5001 | 888-285-8501 | bryce@itcc.com |
| 83 | Eva | Myers | 2001 | 888-285-8203 | eva@itcc.com |
| 92 | Lyn | Lorenzo | 3001 | 888-285-8305 | lyn@itcc.com |
| 11 | Jamaal | Holt | 3001 | 888-285-8307 | jamaal@itcc.com |
Project Data
When inserting into this table, use the following format to help with the start dates and end dates. Start date/End date will be replaced with the data values exactly as they are shown in the Start Date/End date column.
INSERT INTO Project VALUES (ProjectID, ProjectName, ProjDeptID, MaxHours, TO_DATE (StartDate,’DD-Mon-YYYY’), TO_DATE (EndDate,’DD-Mon-YYYY’));
Project Data
| ProjectID | ProjectName | ProjDeptID | MaxHours | StartDate | EndDate |
| 901 | Product Plan | 3001 | 135 | 10-May-12 | 15-Sep-12 |
| 902 | Tax Preparation | 1001 | 120 | 05-Jul-12 | 15-Oct-12 |
| 903 | Portfolio Analysis | 5001 | 145 | 10-Aug-12 |
Project Task Data
| ProjectID | EmployeeID | HoursWorked |
| 901 | 47 | 30 |
| 901 | 56 | 75 |
| 901 | 38 | 55 |
| 902 | 65 | 40 |
| 902 | 10 | 45 |
| 902 | 74 | 25 |
| 903 | 74 | 20 |
| 903 | 83 | 45 |
| 903 | 29 | 40 |
| 901 | 74 | 35 |
| 902 | 56 | 80 |
UPDATE Project Task Data
To update the Task Details table, you will have to use the AND keyword in your WHERE clause. Look at the format below.
UPDATE tablename
SET columname = value
WHERE condition1 = value AND condition2 = value
| ProjectID | EmployeeID | TaskDetails |
| 901 | 47 | Payments |
| 901 | 56 | Error checking |
| 901 | 38 | User management |
| 902 | 65 | Annual Accounts |
| 902 | 10 | Research requirements |
| 903 | 83 | Overview |
| 903 | 29 | Error checking |