You are employed as a Database Developer for a large IT development company. The company has been approached by a transport company called SmartMovers which has grown to a level where need to have an automated system to handle day today operational activities to meet customer demands. You are given the job to design and develop a database solution for SmartMovers to meet their business requirements.
The company transports chemical products from one location to another on behalf of registered customers. Customers are of three types namely Catogory1, 2 and 3. Each customer is given a unique customer number and his or her details have to be recorded in the system.
Each transport operation is called a job, which involves picking up one or more loads of the products from a customer requested start location and delivers it to a customer requested destination. A unique number is given for each job and for each load when they are created.
a driver, assistant, and a container (for carrying the product) A container isfixed to a trailer so it needs to be coupled to a lorry at the start of a Job. (Single container can transport only one chemical product due to safety requirements) Paymentsfor a job depends on customer type, product type (No Risk, High risk) and the load type (small, medium and large). Transport operations are run from 9 regional depots. Jobs are allocated to individual depots to service. Depots hold, manage and maintain their own transport units which are permanently allocated to them to service Jobs. Normally transport units are held at the base Depot they belong.
The final system should be able to provide the required information for management decision making and to handle daily operations efficiently and effectively.
a. Identify the user and system requirements to design a database for the above scenario.
b. Identify entities and attributes of the given scenario and design a relational database system using conceptual design (ER Model) by including identifiers (primary Key) of entities and cardinalities, participations of relationships.
c. Convert the ER Model into logical database design using relational database model including primary keys foreign keys and referential Integrities. It should contain at least five interrelated tables.
a. Explain data normalization with examples. Check whether the provided logical design in task 1.1 is normalised. If not, normalize the database by removing the anomalies.
b. Design set of simple interfaces to input and output for the above scenario using Wireframe or any interface-designing tool.
c. Explain the validation mechanisms to validate data in the tables with examples.
a. Check whether the given design (ERD and Logical design) is representing the identified user and system requirementsto access the effectiveness of the design
Develop the database system with evidence of user interface, output and data validations, and querying across multiple tables.
a. Develop a relational database system according to the ER diagram you have created (Use SQL DDL statements).
b. Provide evidence of the use of a suitable IDE to create a simple interface to insert, update and delete data in the database
c. Implement the validation methods explained in task 1.2-part c.
d. Display the details payment with the job details and the customer details using Join queries
a. Explain the usage of DML with below mentioned queries by giving at least one single example per each case from the developed database.
Select, Update, Delete
a. Explain how security mechanisms have been used and the importance of these mechanisms for the security of the database. Implement proper security mechanisms (EX: -User groups, access permissions) in the developed database
a. Explain the usage of the below SQL statements with the examples from the developed database
Group by, Order by, Having, Between, Where
a. Provide a suitable test plan to test the system against user and system requirements
b. Provide relevant test cases for the database you have implemented
a. Explain how the selected test data in task 3.1 b. can be used improve the effectiveness of testing.
a. Get independent feedback on your database solution from the nontechnical users and some developers (use surveys, questioners, interviews or any other feedback collecting method) and make recommendations and suggestions for improvements in a separate conclusion/recomme dations section
a. Prepare a simple users' guide and a technical documentation for the support and maintenance of the software.
a. Your technical documentation should include some of the UML diagrams (Use case diagram Class diagram, etc.), flow charts for the important functionalities, context level DFD and the Level 1 DFD
a. Suggest the future improvements that may be required to ensure the continued effectiveness of the database system.
User requirements are user needs and describe what the user does with the system. Such as what activities users should be able to perform using the system. User requirements are generally used as the primary input for creating system requirements. Requirements should see from user's perspective. (Parker, 2014)
Detailed description of what the system should do including the software system's functions, services, and operational constraints. The system requirements document (functional specification) should define exactly what is to be implemented. (cs.ccsu.edu, c2022) System requirements are either classified as;
• Functional requirements
• Non-functional requirements
Functional requirements are services the system should provide, how the system should react to particular inputs and how the system should behave in particular situations. May state what the system should not do. Functional requirements specify what a system should do and what a system should not do.
Non-functional requirements These are basically the quality constraints that the system must satisfy according to the project contract. It doesnt include any functional aspects.
Smart movers is a transport company and want to promote up and need have an automated system to handle day to day activities. The company handles chemical products. The company want to keep records of Customer with Customer category, Products with risk type, Load details with load type, Deriver detail and assistant details. Lorries and containers details, Payment details.
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