Database Systems
🇬🇧
In Inglés
In Inglés
Practique preguntas conocidas
Manténgase al día con sus preguntas pendientes
Completa 5 preguntas para habilitar la práctica
Exámenes
Examen: pon a prueba tus habilidades
Pon a prueba tus habilidades en el modo de examen
Aprenda nuevas preguntas
Modos dinámicos
InteligenteMezcla inteligente de todos los modos
PersonalizadoUtilice la configuración para ponderar los modos dinámicos
Modo manual [beta]
El propietario del curso no ha habilitado el modo manual
Modos específicos
Aprende con fichas
Completa la oración
Escuchar y deletrearOrtografía: escribe lo que escuchas
elección múltipleModo de elección múltiple
Expresión oralResponde con voz
Expresión oral y comprensión auditivaPractica la pronunciación
EscrituraModo de solo escritura
Database Systems - Marcador
Database Systems - Detalles
Niveles:
Preguntas:
33 preguntas
| 🇬🇧 | 🇬🇧 |
| Focuses on proper generation, storage, and retrieval of data | Data Management |
| -This database supports only one user at a time: Desktop database: single-user; runs on PC | Single-user database |
| -This database supports multiple users at the same time - Workgroup and enterprise databases | Multiuser database |
| Data located at a single site | Centralized database |
| Data distributed across several different sites | Distributed database |
| - supports a company’s day-to-day operations =>Transactional or production database | Operational database |
| Stores data used for tactical or strategic decisions | Data warehouse |
| -represents data elements in textual format ~>XML database supports semi-structured XML data | Extensible Markup Language (XML) |
| - access to a file is dependent on its own structure - All file system programs must be modified to conform to a new structure | Structural dependence |
| - change file structure without affecting data access | Structural independence |
| Data access changes when data storage characteristics change | Data dependence |
| Data storage characteristics do not affect data access | Data independence |
| Same data stored unnecessarily in different places | Data Redundancy |
| Organizational structure promotes storage of same data in different locations | Islands of information |
| Five major parts of a database system 1) Hardware 2) Software 3) People 4) Procedures 5) Data | Five major parts of a database system |