What is the highest level of data abstraction in a database system?, Conceptual level, Physical level, External level, Logical level, Which SQL command is used to add new records to a database table?, DELETE, SELECT, UPDATE, INSERT, Which of the following is a key feature of the NoSQL Database Model?, Support for complex joins and transactions, Exclusive use of SQL for data manipulation, Horizontal scalability and flexible schema design, Strict adherence to ACID properties, In a database, what is a relationship?, A set of attributes that describe an entity, A link between entities that defines how they are related to each other, The physical storage location of the database on disk, A unique identifier for each record in a table, Which term refers to the structure of a database at a specific point in time, including all the data contained in it?, Database instance, Foreign key, Entity-Relationship Diagram (ERD), Database schema, What is the purpose of a Unique Identifier (UID) in a database?, To speed up data retrieval for specific queries in the database, To store large binary data, such as images or documents, To ensure that each attribute has a unique name in the database schema, To enforce data integrity and guarantee the uniqueness of each record, Which type of table join returns all rows from both tables, including rows with no matching values in the other table?, LEFT JOIN, FULL JOIN, INNER JOIN, RIGHT JOIN, In the context of a database, what are attributes?, Unique identifiers assigned to each database record, The physical location of the database on disk, The individual data elements that describe entities in a database, Relationships between entities in the database, Which SQL clause is used to filter records based on specific criteria?, ORDER BY, WHERE, SELECT, GROUP BY, What happens when a record with a primary key is deleted from the primary table in a foreign key relationship?, The foreign key becomes null in the referencing table., The database automatically deletes all related records in the referencing table., The deletion is restricted if there are related records in the referencing table., The foreign key is updated to a default value in the referencing table..

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