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ERD DIAGRAM PROBLEM
a) Consider the following case study and answer the questions that follow.
A Country Bus Company owns a number of busses. Each bus is allocated to a particular route, although some routes may have several busses. Each route passes through a number of towns. One or more drivers are allocated to each stage of a route, which corresponds to a journey through some or all of the towns on a route. Some of the towns have a garage where busses are kept and each of the busses are identified by the registration number and can carry different numbers of passengers, since the vehicles vary in size and can be single or double-decked. Each route is identified by a route number and information is available on the average number of passengers carried per day for each route. Drivers have an employee number, name, address, and sometimes a telephone number.
i. Identify all the entities
ii. Identify all the relationships
iii. Draw the ERD Diagram
iv. Apportion cardinality ratios appropriately in the ERD Diagram above
Which object would you use to enter, delete, or modify data. Which object would you use to retrieve customers who live in Germany and the United States
Create a set of invariants for attribute and relationship and add them to the CRC cards for each class in the structural model using Object Constraint Language.
COIT20247 Database Design and Development (T12017) Assignment. Create all the relations in a Microsoft Access database
SIT772 Database and Information Retrieval - demonstrate proficiency against Unit Learning Outcome 5. ULO5: Demonstrate data retrieval skills
Assignment - XML Overview. Describe and compare multiple data management strategies including XML, NoSQL, and Hadoop
one of the needs that your client has is a database.to design a database a database planner should spend a considerable
How documents are converted as they transition from one stage to another during their life cycles. How documents are treated as corporate records that must be retained according to legal requirements and corporate guidelines.
Populating Local DB2. Run the script that creates and populates the local DB2 database. It has been posted on Bb, under Homework Assignments. Download it, study the relational schema and run it on your Oracle account
Analyse and evaluate a 3rd party db application; details will be given in class. Brief description of the functionality of this 3rd party db application
Create the tables Create the primary keys Create the foreign keys Add DML statements to: Add data of 1 customer who buys from the company Provide the DML to add 1 employee who interacts with customers Give DML to change data of the employee
Do not use numbers or other methods to indicate the changed sequence.
Draw an EER model for the requirements identified in Part 1. The EER Model should be accompanied with a data dictionary which includes entity type table, relationship type table and attribute table.
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