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    Question

    Which of the following is a characteristic of a

    relational database management system (RDBMS) that distinguishes it from other database systems?
    A Stores data in hierarchical structures Correct Answer Incorrect Answer
    B Uses fixed-length files for data storage Correct Answer Incorrect Answer
    C Organizes data in rows and columns within tables Correct Answer Incorrect Answer
    D Data is stored as key-value pairs Correct Answer Incorrect Answer
    E Supports only unstructured data formats Correct Answer Incorrect Answer

    Solution

    The fundamental feature of an RDBMS is its organization of data into tables. These tables are structured in rows (tuples) and columns (attributes), forming a relational model. 1. Tabular Structure: Each table in an RDBMS has a unique name and predefined columns, where rows contain individual records. This logical structure makes data easy to query and manipulate. 2. Relational Integrity: Relationships between tables are established using keys such as primary keys and foreign keys. 3. Query Language: SQL is employed for querying, updating, and managing the data efficiently. 4. Advantages: Data consistency, integrity, and flexibility in querying make RDBMS a preferred choice for structured data applications. This tabular format is what differentiates relational databases from other models, enabling structured, predictable, and optimized data access. Why Other Options Are Incorrect: • A) Stores data in hierarchical structures: This describes hierarchical databases, not RDBMS. Hierarchical databases organize data in a tree-like structure. • B) Uses fixed-length files for data storage: While file-based systems may use fixed-length records, RDBMS offers dynamic storage. • D) Data is stored as key-value pairs: Key-value pair storage is a characteristic of NoSQL databases, not RDBMS. • E) Supports only unstructured data formats: RDBMS focuses on structured data stored in a well-defined schema, unlike systems designed for unstructured data (e.g., document databases).

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