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| entity integrity (A state in which every row of every table can be uniquely identified) | |||
| целостность сущностей: 1 do fraz, 1 tematyki |
| Technologia informacyjna | 1 |
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| |||
| entity integrity (A state in which every row of every table can be uniquely identified) | |||
| целостность сущностей: 1 do fraz, 1 tematyki |
| Technologia informacyjna | 1 |