Which action should a DBA take to view multiple related data sources in a single structure?

Which action should a DBA take to view multiple related data sources in a single structure?

• A. Create a view
• B. Set up a junction table
• C. Implement stored procedures
• D. Establish a foreign key

Answer: (A)

Creating a view allows a Database Administrator (DBA) to present data from multiple related tables as a single structure. A view is essentially a virtual table that is defined by a SQL query. This means that the DBA can combine data from different sources, select specific columns, and even filter the rows to present only relevant information. It simplifies complex queries and provides a way to encapsulate and reuse logic in a database. Using views can be particularly advantageous when dealing with related data sources, as it abstracts the underlying complexity, enabling users to work with the data more intuitively. Views can also enhance security by restricting access to certain data, allowing users to see only what is necessary without giving them direct access to the tables. The other options listed serve different purposes. A junction table is used to handle many-to-many relationships between tables and is not used for presenting data in a structured way. Stored procedures are designed for encapsulating SQL logic for reuse and execution rather than for presenting data. Establishing a foreign key creates a relationship between tables to maintain referential integrity but does not provide a means to view or combine data in a single structure.

Creating a view allows a Database Administrator (DBA) to present data from multiple related tables as a single structure. A view is essentially a virtual table that is defined by a SQL query. This means that the DBA can combine data from different sources, select specific columns, and even filter the rows to present only relevant information. It simplifies complex queries and provides a way to encapsulate and reuse logic in a database.

Using views can be particularly advantageous when dealing with related data sources, as it abstracts the underlying complexity, enabling users to work with the data more intuitively. Views can also enhance security by restricting access to certain data, allowing users to see only what is necessary without giving them direct access to the tables.

The other options listed serve different purposes. A junction table is used to handle many-to-many relationships between tables and is not used for presenting data in a structured way. Stored procedures are designed for encapsulating SQL logic for reuse and execution rather than for presenting data. Establishing a foreign key creates a relationship between tables to maintain referential integrity but does not provide a means to view or combine data in a single structure.