Aim: To give you practical experience in with database modelling, normalization and writing SQL statements.
Background Information
A local Sydney hotel requires a database system to manage their bookings and payments.
When a guest rings up or comes into the hotel to book a room for the first time they are asked to provide their name, address, and telephone number. Guests may make reservations for a room which includes the date and time, number of adults, number of children, expected arrival date & time, expected departure date & time, and notes. Reservations may be confirmed and / or cancelled.
When the guest checks in to the hotel reception enter a record of the room number, and check in date & time. Guests may also check in without a reservation.
When the guest checks out then the checkout date & time, and number of days are entered into the database. The number of days is calculated but may be overwritten by a manager and the guest is charged for the accommodation plus additional service charges including restaurant, dry cleaning, valet parking, room service, etc.
Once the checkout details have been completed then the guest is invoiced for the accommodation and also additional service charges. Payments are recorded for each room booking. Payments are expected to be in full. However, the system allows multiple payments to be recorded against each room booking.
The database system also needs to keep a record of database users, staff, rooms, room type, facilities, payments, payment types, and guest notes.
Project Specification
1. Part A
You are provided an Excel file that contains a partial ERD, suggested table definition, and also some sample data. See HMS_Data.xlsx
Use the Excel workbook file HMS_Data.xlsx to perform the following tasks.
1. Your first task is to study the sample data and determine appropriate data definitions. Check that the spreadsheet data has been normalized to third normal form. Study the partial ERD on the first sheet that provides a suggested schema.
The file has various other worksheets including:
• Bookings
• Country Lookup
• Facility List
• Guests
• Notes
• Payment Methods
• Payments
• Reservations
• Room Facilities
• Rooms
• Room Type
• Service Charge
• Service Types
• Staff
• Users
2. Create an Entity Relationship Diagram (ERD) to help you decide on the relationships.
Your entity relation diagram that models your database design should:
a. Include all entities, relationships (including names) and attributes.
b. Identify primary and foreign keys.
c. Include cardinality/ multiplicity and show using crow's feet or UML notation.
d. Include participation (optional / mandatory) symbols if applicable.
The E-R should be created as part of a Microsoft Word document. Hand-drawn diagrams will not be accepted. It is recommended that
you complete your ERD using Visio, draw.io, or www.gliffy.com.
3. Using SQLite, you are required to develop a demonstration prototype system that handles hotel bookings and payments. Use SQLite to create a new database called HMS. Create tables according to your ERD. Follow a standard naming convention for table names and also field names. Avoid using spaces and any special characters in table and also field names. Use underscore_case or use camelCase to separate parts of a name.
4. Create relationships between tables and enforce the referential integrity as shown below.
Relationships:
• Guests can have one or more bookings.
• Each room booking can have numerous service charges associated with it.
• Each room is classified by room type, such as deluxe, suite, or twinshare.
• Each room is also provisioned with various facilities such as TV, spa, etc.
• Each guest record may require one or more notes so as to keep a history of information related to the guest record.
• Notes may be assigned to a particular staff person (or database user) to follow up.
• Each room booking may have one or many payments and each payment is identified as to the payment method.
5. The database should include suitable validation and integrity checks as well as appropriate referential integrity checks. That is, AS A
MINIMUM, your system should ensure that the following events cannot occur:
Referential Integrity Constraints:
• A booking record cannot be entered for a guest that does not exist.
• A guest cannot be deleted for which a reservation or a booking has been recorded. Similarly a guest cannot be deleted once notes have been entered for the guest record. Likewise, staff (users) cannot be deleted once staff persons have been assigned to follow up a note.
• A booking cannot be deleted once the booking has a service charge or payment details associated with it. Similarly a service type cannot be deleted once the service type has been entered against any service charge detail record for a guest booking.
• Only service types that have been entered into the service types table may be entered as charges for service charge details.
• Rooms cannot be deleted once rooms have been assigned to a guest room booking record.
• Payment methods cannot be deleted once payment methods have been recorded against payments and room bookings that have matching payment details cannot be deleted once payment records have been entered.
6. Save the data in the Excel file provided in a CSV file format and import the data into your tables in SQLite.
a. Save a copy of HMS_Data.xlsx as HMS_ERD.xlsx and for each sheet delete the definition and arrange the data so that the sample data appears immediately below the column headings.
Position the data for each table starting from cell A1.
b. Import your normalised data from Excel into your tables. Save your data in Excel in a CSV file format. Select your table in SQLite, click the Operations tab and then import the data from the CSV file. See
https://stackoverflow.com/questions/1045910/how-can-i-import- load-a-sql-or-csv-file-into-sqlite to learn how to save in a CSV format and import into SQLite.
7. Add at least two new records into the appropriate tables to include your details as a guest, room booking details of your own, and notes details related to your guest record.
Attachment:- dbms.zip