Not a premium member yet? Save 100's of hours on lesson prep with a comprehensive library of GCSE Computer Science resources - including worksheets, tests, and PowerPoint presentations.
Download the complete GCSE Computer Science bundle including all teacher resources and student revision:
- 200+ Computer Science/ICT resources
+ any we release in the future!
- Access to all student revision notes
- OCR, AQA, Edexcel and WJEC compatible
- New 9-1 GCSE spec
A database record is collection of fields about the same person, item, or object in a database. The database record can be thought of as a row of information within a database table.
A database is a set of data arranged in a way that a computer program can immediately choose required portions of data. It is often called DB.
A common database can be compared to a filing system which is arranged by fields, records and files. A field is a specific piece of data; a record is a total set of fields; and a file is a group of records. For example, a phone book can be considered a file with a list of records. Each record has the following fields: name, address and phone number.
A database management system (DBMS) is used to obtain data from a database. DBMS is a selection of programs that allows the user to input, arrange, and choose data from a database. There are distinct kinds of DBMS, from small systems that perform on personal computers to large systems that perform on mainframes.
A record is a group of data saved in a table. It is a set of fields, like an employee’s job record as shown below.
|Employee ID||Last Name||First Name||Position||Department||Hire Date|
|00108||Doe||John||Assistant Manager||Human Resources||November 16, 2000|
|00109||Parker||Anne||Supervisor||Financial Services||May 1, 2003|
A record in a database is an object that can have one or more values. Groups of records are then saved in a table; the table determines the data that each record may have. Various tables hold various records in a database.
A new record produces a new row in the table that’s why records are oftentimes labeled as rows. Separate fields are referred to as columns because they are identical for every record in the table. Record and row can be utilised mutually, but nearly all database management systems utilise row for error messages and queries.
Records provide a practical way to save and pull out data from the database. Each record can have diverse types of data, and thus a single row could have several kinds of information.
Records can be easily created, altered and erased without affecting other data in the database.
An ideal database design should have a primary key for the table. A primary key is a unique field in each record in a database. In an employee’s job record sample above, the Employee ID is the primary key.
A group of records can be called a file, data set or table.
Advantages of Using a Database
- Significant time savings – Fetching a single record can be done in a just a few clicks. Merging database records can be done in an instant.
- More handy information – Creating and running a query can be done easily to seek for distinct answer or record from the database.
- Capacity to connect data – Different sources of information can be linked together to review performance.
- Ability to stimulate mail, email and social media – Mass customisation in terms of specific response to potential customers depending on interpreted customer information. Mail and email operations can be easily driven to customers. Social media feedback can be easily tracked.
Disadvantages of Using a Database
- Complexity – Database needs complicated hardware and software systems. Design and development is an intricate endeavour.
- Cost – Database requires considerable one-time and continuous financial resources. Database management system customisations would include periodic modifications that has cost implications.
- Security – There is a need to ensure that database systems can safely save data including confidential information. High security against viruses and hacking is required.
- Compatibility – There is a possibility that a database management system might not be suitable with a company’s functional requirements. Scalable database management systems that are being offered nowadays may resolve this issue.