IG2 Glossary - U4 Advanced programming TB C9 &C10
Authored by Sophia Shen
Computers
9th Grade
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19 questions
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1.
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1 min • 1 pt
an SQL command that counts the number of records (rows) in which the field (column) matches a specified condition; used with SELECT
Answer explanation
计数
2.
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1 min • 1 pt
a classification of how data is stored and displayed, and of which operations can be performed on the stored value
Answer explanation
数据类型
3.
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1 min • 1 pt
a persistent structured collection of data that allows people to extract information in a way that meets their needs
Answer explanation
数据库
4.
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1 min • 1 pt
a single item of data in a record, stored in a database table
Answer explanation
字段
5.
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1 min • 1 pt
an SQL command that identifies the table to use full-duplex data that can be sent in both directions at the same time (simultaneously)
Answer explanation
来自
6.
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1 min • 1 pt
an SQL command that sorts the results from a query by a given column, either alphabetically or numerically
Answer explanation
以……为序
7.
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1 min • 1 pt
a field in a database that uniquely identifies a record
Answer explanation
主键
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