Chapter 9: Problem 3

List the three main approaches to database programming. What are the advantages and disadvantages of each approach?

Short Answer

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The three main approaches to database programming are the navigational, SQL and object-oriented approaches. Navigational approach provides maximum control over the data but is complex. SQL approach is easy to use and widely supported but can have performance issues. Object-oriented approach mirrors real-world situations making it efficient, but can be overcomplex for simple data and is not universally supported.

Step by step solution

Describing the first approach

The first approach to database programming is the navigational approach. With this approach, a programmer directly navigates to the data that they need. Advantage: The navigational approach provides the programmer with maximum control over the data. It is more efficient since it eliminates unnecessary data retrieval. Disadvantage: The major drawback is the higher degree of complexity, which translates into a high learning curve and difficulty in modifying and maintaining such a database system.

Describing the second approach

The second approach to database programming is the SQL approach. Here, a programmer writes SQL queries to interact with the database. Advantage: The SQL approach is the most widespread and supported by many database management systems. It has a lower degree of complexity, making it easier to learn and use. Structured Query Language (SQL) is powerful and flexible, allowing complex operations on data. Disadvantage: There can be performance issues due to the inefficient execution of SQL statements, and it requires careful planning and optimization. Additionally, it hides some details, leading to less control over data.

Describing the third approach

The third approach is the object-oriented approach. In this approach, data is represented as objects. Advantage: The object-oriented approach is easy to understand and use because it models real-world situations (objects). This leads to more efficient program design since the database structure can mirror the object model. Disadvantage: This approach might be overkill for simple data and its complexity can increase for large systems. Also, not all systems support object-oriented databases, limiting their use.

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List the three main approaches to database programming. What are the advantages and disadvantages of each approach?

Short Answer

Step by step solution

Describing the first approach

Describing the second approach

Describing the third approach

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