Final answer:
SQL (Structured Query Language) facilitates communication between databases. It is used to manage and manipulate data in RDBMS or RDSMS, but it is not used for website design, managing software updates, or a hardware component.
Step-by-step explanation:
In response to the question regarding a digital marketplace for outdoor banners and the role of SQL, the correct answer is b. Facilitates communication between databases. SQL, which stands for Structured Query Language, is a specialized programming language designed for managing and manipulating data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS). It is not used for website design directly, nor does it manage software updates or represent a hardware component.
SQL allows you to insert, search, update, delete, and modify database records. By doing so, SQL plays a crucial role in many web applications that require data to be stored and retrieved, making it an essential tool for developers working on digital marketplaces where large amounts of product, user, and transaction data must be handled efficiently and reliably.