Future database development
Learning Outcomes:
- Discuss the needs and trends of future database development and the corresponding applications.
- Students should be able to discuss the impact of technologies, and dynamic web pages on database development.
- In considering the need for different database applications, factors such as volume of data, variety of data and variety of users should be discussed.
Relevant past paper:
DSE Elec A(SP-2016): 2012 4e. 2014 3d. 2016 2c.
Contents of dynamic web pages change on interaction with
user. For examples, user can login to their own account and make purchases in a
web page, which will be saved in the DBMS. The web page content show what you
have purchased based on the information from DBMS.
Different systems are necessary to provide dynamic web pages
including a web server, a database system and application system to build the
dynamic web page.
They are more costly and slower than usual static web pages.
Yet, it allows interaction with users and provides up-to-date information to
users.
Variety of data
Image data and other types of data can be stored in a
database table or outside the database.
Store images in database tables:
- Advantages: data consistency maintained by DBMS, security provided by DBMS.
- Disadvantages: large volume of data to process - slower, inconvenient to view the images.
References:
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