Database Management System Chapter 1
Database ️A collection of organized data that allows access, retrieval, and use of data.
Database Management System (DBMS) ️Software through which users and application programs
interact with a database
Character ️Any written or printed letter, num...
Database Management System Chapter 1
Database ✔️A collection of organized data that allows access, retrieval, and use of data.
Database Management System (DBMS) ✔️Software through which users and application programs
interact with a database
Character ✔️Any written or printed letter, number, or symbol
Field ✔️Group of related characters. Ex. Customer Name. Corresponds to Column in physical database
Record ✔️a collection of fields about 1 customer (name, address, city, state, etc.) Corresponds to row
in a physical database.
File ✔️A group of records about the same type of entity (customers or inventory items)
DBMS Functionality ✔️*Data Storage: Manage the physical structure of the database.
*Security: control user access and privileges.
*Multiuser access: Manage concurrent data access.
*Backup: enable recovery options for database failures.
*Data access language: provide a language that allows database access.
*Data integrity: Enable constraints or checks on data.
*Data dictionary: maintain information about database structure.
Systems Development Life Cycle (SDLC) ✔️1. Systems investigation: Understanding the problem
2. Systems analysis: Understanding the solution to the previously identified problem
3. Systems design: Defining the logical and physical components.
4. Systems implementation: Creating the system
5. Systems integration and testing: Placing the system into production.
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