10.1.2 Database management systems (DBMS)

• A Database Management System (DBMS) acts as an interface between the user and the database
• Data storage in a DBMS organizes data in a structured manner.
• What does data manipulation in a DBMS allow users to do?

  Insert, update, delete data
• Backup and recovery in a DBMS provides mechanisms to restore data in case of failure
• Data integrity in a DBMS enforces rules to maintain data consistency and accuracy.
• What is one key benefit of using a DBMS for data management?

  Enhanced data security
• Better concurrency control in a DBMS manages simultaneous user access
• Key components of a DBMS and their functions

  1️⃣ Data Storage: Organizes and stores data in a structured manner

  2️⃣ Data Retrieval: Allows users to query and access data quickly

  3️⃣ Data Manipulation: Enables users to insert, update, and delete data

  4️⃣ Data Security: Implements security measures to protect data integrity and confidentiality

  5️⃣ Concurrency Control: Manages simultaneous user access to the database

  6️⃣ Backup and Recovery: Provides mechanisms to restore data in case of failure

  7️⃣ Data Integrity: Enforces rules to maintain data consistency and accuracy
• SQL databases use tables to organize data, as an example of data organization in a DBMS.
• Using $SELECT$ statements in SQL allows users to retrieve specific records
• What does concurrency control in a DBMS prevent when multiple users access data simultaneously?

  Conflicts
• Match the DBMS role with its description:

  Data Organization and Storage ↔️ Stores data using relational or NoSQL models

  Data Retrieval ↔️ Allows users to query and retrieve data

  Data Integrity ↔️ Enforces rules to maintain data consistency

  Backup and Recovery ↔️ Restores data in case of failure
• What does data security in a DBMS protect data against?

  Unauthorized access
• Reduced data redundancy is a key advantage of using a DBMS
• Effective backup and recovery in a DBMS ensures data can be restored in case of failure.
• What is the primary function of the Data Storage component in a DBMS?

  Organize and store data
• The Data Retrieval component in a DBMS allows users to query and access data quickly
• Data Security in a DBMS protects data integrity and confidentiality.
• Arrange the components of a DBMS based on their primary function:

  1️⃣ Data Storage

  2️⃣ Data Retrieval

  3️⃣ Data Manipulation

  4️⃣ Data Security

  5️⃣ Concurrency Control

  6️⃣ Backup and Recovery

  7️⃣ Data Integrity
• What does the Concurrency Control component manage in a DBMS?

  Simultaneous user access
• The Backup and Recovery component in a DBMS provides mechanisms to restore data in case of failure
• Data Integrity enforces rules to maintain data consistency and accuracy.
• What is the main purpose of a Database Management System (DBMS)?

  Organize, access, and manipulate data
• Data Organization and Storage in a DBMS typically uses tables in relational databases.
• Match the role of a DBMS with its description:

  Data Organization and Storage ↔️ Organizes and stores data

  Data Security ↔️ Protects data from unauthorized access

  Concurrency Control ↔️ Manages multiple users simultaneously
• What SQL statement is used to update data in a DBMS?

  $UPDATE$
• Backup and Recovery in a DBMS ensures data can be restored in case of failure.
• Data Integrity in a DBMS uses constraints like primary keys and foreign keys to ensure valid data relationships.
• What type of DBMS uses a tree-like structure?

  Hierarchical
• Match the type of DBMS with its primary use case:

  Relational ↔️ Most modern applications

  NoSQL ↔️ Big data, web applications

  Network ↔️ Engineering, manufacturing
• Which type of DBMS is highly scalable and uses a flexible schema?

  NoSQL
• Relational DBMS provides strong data integrity and is easy to query.
• What is one advantage of using a DBMS in terms of data redundancy?

  Reduced redundancy
• Using a DBMS ensures increased data consistency by enforcing data integrity rules.
• How does a DBMS simplify data access for users?

  Efficient querying and retrieval
• Regular backups in a DBMS ensure effective data recovery in case of failure.
• What are the key features of a DBMS as defined in its description?

  Data storage, retrieval, manipulation
• A Database Management System (DBMS) is a software application that manages databases
• What does the Data Storage feature of a DBMS handle?

  Organizes and stores data
• The Data Retrieval feature of a DBMS allows users to query data.