Critically compare different data models and schemas
You are required to identify various types of database models such as hierarchical network relational and object-oriented. Use appropriate diagrams to compare and contrast the key features, advantages and disadvantages of each database model.
Critically discuss the benefit and limitations of the different database
You are required to identify various types of database technologies such as file-based, relational database, multimedia database, object-oriented database, distributed database, data warehousing (data mars and data mining), web-based technology (cloud computing). Discuss benefits and limitations of each technology.
You are required to identify two approaches such as top-down and bottom-up about designing databases. Under the top-down approach, you are required to discuss ERD modelling process. This should include the notation which you use for ERD modelling, the entities, the relationships, the type of relationships, the attribute of entities need to be illustrated with appropriate images. You are required to explain the role of the top-down approach regarding designing database systems. About bottom-up approach, you are required to illustrate how normalisation process would help to identify normalise tables for the database solution. You are required to use examples when illustrating un-normalised form, first normal form(1NF), second normal-form(2NF) and third normal form(3NF).
Normalisation process (has to be explained)
-Un-normalised form
Under this process, you are required to gather all the data and create one table having all the entities and the attributes and define a primary key for that large table.
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