Database Management Systems (DBMS) Quiz

Data Independence = Ability to change the schema at one level without affecting the schema at the next higher level Relational Database = Stores data in tables and allows the creation of relationships between the tables DBA Functions = Database design, security management, performance monitoring, backup and recovery Normalization = Process of organizing data to minimize redundancy and dependency

Hierarchical Model = Organizes data in a tree-like structure with a parent-child relationship Network Model = Allows each record to have multiple parent and child records, creating a more complex structure Three-level Architecture = External, conceptual, and internal levels of database abstraction Data Model = Description of the organization of data in a database system

Selection Operation = Extracts tuples from a relation that satisfy a given condition Projection Operator = Retrieves only the specified columns from a table Set Operators = Union, intersection, and difference operations on relations Outer Join = Retrieves matching and non-matching rows from joined tables

<p>Non-loss Decomposition = Decomposing a relation into smaller, non-redundant relations without losing any information Normalization = Process of organizing data to avoid anomalies and improve data integrity FDs Third Normal Form = Ensures that a relation is in 2NF and every non-prime attribute is fully functionally dependent on the primary key Relational Database Concepts = Tables, keys, relationships, and integrity constraints in a database system</p> Signup and view all the answers

<p>General-purpose programming = Language suitable for a wide range of applications and tasks Client-side scripting for web applications = Scripting language executed by the user's web browser Database queries = Commands to retrieve or manipulate data in a database system Styling web pages = Defining the presentation of web content using formatting and layout</p> Signup and view all the answers