The database development life cycle: View as single pageA database application is a computer program whose primary purpose is entering and retrieving information from a computerized database. Early examples of database applications were accounting systems and airline reservations systems, such as SABRE , developed starting in A characteristic of modern database applications is that they facilitate simultaneous updates and queries from multiple users. Systems in the s might have accomplished this by having each user in front of a terminal to a mainframe computer. By the mids it was becoming more common to give each user a personal computer and have a program running on that PC that is connected to a database server. Information would be pulled from the database, transmitted over a network, and then arranged, graphed, or otherwise formatted by the program running on the PC. Starting in the mids it became more common to build database applications with a Web interface.
Database Tutorial for Beginners
4 Important Roles of Database Management System in Industry
A core aspect of software engineering is the subdivision of the development process into a series of phases, or steps, each of which focuses on one aspect of the development. The software product moves through this life cycle sometimes repeatedly as it is refined or redeveloped until it is finally retired from use. Ideally, each phase in the life cycle can be checked for correctness before moving on to the next phase. Let us start with an overview of the waterfall model such as you will find in most software engineering textbooks. This waterfall figure, seen in Figure
A database is an organized collection of data , generally stored and accessed electronically from a computer system. Where databases are more complex they are often developed using formal design and modeling techniques. The database management system DBMS is the software that interacts with end users , applications, and the database itself to capture and analyze the data. The DBMS software additionally encompasses the core facilities provided to administer the database. The sum total of the database, the DBMS and the associated applications can be referred to as a "database system". Often the term "database" is also used to loosely refer to any of the DBMS, the database system or an application associated with the database. Computer scientists may classify database-management systems according to the database models that they support.
Relational database systems underpin the majority of the managed data storage in computer systems. This course presents an overview of the development life cycle for a database system and highlights how the database development differs from traditional software development. In this course we look at an outline of the stages involved in the development of a database. We consider the broader issue of how to decide what should be in a database and how to structure the tables that should be included. Our aim is to give you a basic development method so that you can see how a basic database system is developed. We don't argue that this specific method is the most applicable to any given situation — however, we do consider that this method is straightforward and will allow you to contextualise or, by comparison, consider a range of database development techniques. Before we consider the development method in more detail let's discuss why we need to take a formal approach to database development.
PDF | On Dec 1, , Bhojaraju.G and others published Database Management : Concepts and Design | Find, read and cite all the research you need on.
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