Podcast
Questions and Answers
The concept of a ______ existed long before computers.
The concept of a ______ existed long before computers.
database
Charles Bachman designed the first computerized ______ in 1960.
Charles Bachman designed the first computerized ______ in 1960.
database
The standard language used for databases is called ______.
The standard language used for databases is called ______.
SQL
Five major parts of a database system include hardware, software, ______, procedures, and data.
Five major parts of a database system include hardware, software, ______, procedures, and data.
A shared collection of related data used to support the activities of a particular organization is called a ______.
A shared collection of related data used to support the activities of a particular organization is called a ______.
One disadvantage of a file system is ______ of data.
One disadvantage of a file system is ______ of data.
In database systems, excessive ______ maintenance is a common challenge.
In database systems, excessive ______ maintenance is a common challenge.
E. F. Codd released his paper on a relational model of data in ______.
E. F. Codd released his paper on a relational model of data in ______.
Managers of small organizations typically use ______ systems to track necessary data.
Managers of small organizations typically use ______ systems to track necessary data.
Lengthy development times are considered a ______ of a file system.
Lengthy development times are considered a ______ of a file system.
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Study Notes
Information Management Concepts and Fundamentals
- Understanding of databases entails knowledge of basic terms and definitions.
- Database systems exhibit characteristics such as data integrity, security, and multi-user access.
- Various capabilities include data storage, retrieval, manipulation, and application in real-world scenarios.
History of Database
- Database concept predates computers; originally involved manual data storage in journals and filing cabinets.
- 1960: Charles Bachman introduced the first computerized database.
- 1970: E.F. Codd published "A Relational Model of Data for Large Shared Data Banks," laying foundational principles for relational databases.
- 1980: Emergence of SQL (Structured Query Language) as the standardized language for database management.
File Systems
- File systems serve small organizations to manage essential data.
Database Systems
- Challenges include excessive program maintenance which can hinder efficiency.
- The database system comprises five major components:
- Hardware: Physical devices used for data storage and processing.
- Software:
- Operating system software facilitating overall system operation.
- DBMS (Database Management System) software providing tools for database creation and management.
- Application and utility software designed for specific data handling tasks.
- People: Includes key roles such as:
- Systems Administrators: Oversee overall system functionality.
- Database Administrators: Manage and maintain databases.
- Database Designers: Architect data structures and models.
- Systems Analysts and Programmers: Analyze and develop system functionalities.
- End Users: Individuals who interact with the database for information retrieval.
- Procedures: Established methods for data management and operational tasks.
- Data: Core element being stored, manipulated, and maintained.
Database
- Defined as a shared collection of related data, facilitating organizational activities and multiple user access.
- Functions as a structured data repository accessible by various users post-definition.
Disadvantages of a File System
- Program-data dependence complicates data management.
- Causes duplication of data, leading to inconsistencies.
- Limits data sharing among users and departments.
- Lengthy development times impede quick adaptations and updates.
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