133749
| Frage | Antworten |
| Database | A persistent organise store of data. |
| Persistent storage | Non–volatile storage on a secondary storage medium such as a hard disk. |
| Data duplication/data redundancy | Where the same data is stored more than once, unnecessarily. |
| Data inconsistency | Where different versions of data become different because duplicated versions have been stored and updated differently. |
| Program – data Independence | Where applications that use is shared database are separated from the actual data by a database management system. Changes can be made to one application without affecting another. |
| DBMS | Stands for database management system, the system that separates the applications from the data and provides features that allow database systems to be created, integrated and maintained. |
| Views | A feature of DBMS that provides each application or user with specific access rights and views of the database. |
| Flat file database | A persistent organised store of data where data is stored in a single file organised into fields and records. |
| Relational database | A persistent organise store of data where data is stored as a collection of related tables to minimise data redundancy. |
| Entity | A real world object, about which data is stored in a database, corresponds to a table in the relational database. |
| Table | A collection of data organised into records and fields within a relational database. A table represents a real–world entity. |
| Record | Data stored about one instance of an entity i.e: one particular person or object. |
| Field | One specific data item being stored such as surname shoe size. |
| Primary key | A field in a table that uniquely identifies a record. |
| Foreign key | A field in one table that is the primary key in another table and is used to create a relationship between those two tables. |
| Relationship | The logical connection created between two tables using a primary and foreign key pair. |
| Form | An interactive window use for data entry. Usually includes validation routines. |
| Validation | When the computer software checks that the data entered is sensible. |
| Verification | Where data is entered twice and checked that each version is the same, to avoid data being entered with typing mistakes. |
| Queries | A feature of DBMS that allows the database to be interrogated. It selects records from the database based on specific criteria. |
| Logical operator | NOT, AND, OR. Used in complex criteria in queries. |
| Reports | Data from a database that has been processed and presented on a page in a way that makes it information. Designed for hardcopy. |
| Modules | Sections of code within a DBMS that allow the user interface to be tailored. |
Möchten Sie mit GoConqr kostenlos Ihre eigenen Karteikarten erstellen? Mehr erfahren.