2694629
Descripción
Test por Lavington ICT, actualizado hace más de 1 año
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Creado por Lavington ICT
hace más de 9 años
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Pregunta 1
Pregunta
A database is a...
Respuesta
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persistent store of un-organised data.
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persistent store of organised data.
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persistent store of carefully selected and well organised data.
Pregunta 2
Pregunta
Persistent storage is...
Respuesta
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non-volatile storage on a secondary storage medium such as a hard disk.
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volatile storage on a secondary storage medium such as RAM.
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storage on a secondary storage medium such as a hard disk.
Pregunta 3
Pregunta
Data duplication (also known as data redundancy) is...
Respuesta
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where the same data is stored more than once, unnecessarily.
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where the same data is stored only once, unnecessarily.
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where the same data is stored unnecessarily.
Pregunta 4
Pregunta
Data inconsistency is...
Respuesta
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where different versions of data become different because duplicate versions have been stored.
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where different versions of data become different because duplicate versions have been updated differently.
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where different versions of data become different because duplicate versions have been stored and updated differently.
Pregunta 5
Pregunta
A Database Management System (DBMS)...
Respuesta
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separates the applications from the data and provides features that allow database systems to be created, interrogated and maintained.
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separates the applications from the data and provides features that allow database systems to be interrogated and maintained.
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separates the applications from the data and provides features that allow database systems to be created and maintained.
Pregunta 6
Pregunta
A flat file database is...
Respuesta
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a persistent organised store of data where data is stored in a single file organised into fields.
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a persistent organised store of data where data is stored in a single file organised into fields and records.
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an organised store of data where data is stored in a single file organised into fields and records.
Pregunta 7
Pregunta
A relational database is...
Respuesta
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a persistent organised store of data where data is stored as a collection of tables to minimise data redundancy.
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a persistent store of data where data is stored as a collection of related tables to minimise data redundancy.
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a persistent organised store of data where data is stored as a collection of related tables to minimise data redundancy.
Pregunta 8
Pregunta
An entity is a real world object, about which data is stored in a database and corresponds to...
Respuesta
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a table in a relational database.
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a field in a relational database.
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a primary key in a relational database.
Pregunta 9
Pregunta
A table is a collection of data organised into records and fields within a relational database. A table represents a...
Respuesta
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foreign key
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real-world entity.
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report.
Pregunta 10
Pregunta
Data stored about one instance of an entity, i.e. one particular person or object is called...
Respuesta
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table.
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a record.
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a field.
Pregunta 11
Pregunta
One specific data item being stored such as a surname or shoe size is called...
Respuesta
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a primary key.
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a table.
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a field.
Pregunta 12
Pregunta
A field in a table that uniquely identifies a record is called a...
Respuesta
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foreign key.
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primary key.
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entity key.
Pregunta 13
Pregunta
A field in one table that is a primary key in another table and is used to create a relationship between those two tables is called...
Respuesta
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a primary key.
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a foreign key.
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a relationship key.
Pregunta 14
Pregunta
A database form is...
Respuesta
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an interactive window used for data entry that doesn't include validation routines.
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an interactive window used for data entry that always includes validation routines.
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an interactive window used for data entry that usually includes validation routines.
Pregunta 15
Pregunta
When the computer software checks that data entered is sensible.
Respuesta
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Validation
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Verification
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Verify
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Validate
Pregunta 16
Pregunta
Where data is entered twice and checked that each version is the same, to avoid data being entered with typing
mistakes.
Respuesta
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Validation
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Verification
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Validate
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Verify
Pregunta 17
Pregunta
Where data is entered twice and checked that each version is the same, to avoid data being entered with typing
mistakes.
Respuesta
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Validation
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Verification
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Validate
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Verify
Pregunta 18
Pregunta
A feature of a DBMS that allows the database to be interrogated. It selects records from the database based on
specified criteria.
Respuesta
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Report
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Query
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Search
Pregunta 19
Pregunta
Data from a database that has been processed and presented on a page in a way that makes it information.
Designed for hard copy.
Respuesta
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Report
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Query
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Letter
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