DBTG | system structure
| system structure | |
| math. | 系统结构 |
| systems structure | |
| commer. | 系统结构 |
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| Data Base Task Group (CODASYL, DB) | |||
| database task group | |||
| data base task group | |||
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DBTG : 1 phrase in 1 subject |
| Information technology | 1 |