J. Correia Lopes

FEUP/DEI & INESC TEC

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teach:lbaw:artefacts_ebd

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teach:lbaw:artefacts_ebd [02/03/2019 10:31]
Correia Lopes
teach:lbaw:artefacts_ebd [29/03/2019 09:13] (current)
Correia Lopes [A5: Relational Schema, validation and schema refinement]
Line 27: Line 27:
 | Table3(__id1__,​ __id2__ -> Table2, attribute UK NN)  | | Table3(__id1__,​ __id2__ -> Table2, attribute UK NN)  |
 | Table4((__id1__,​ __id2__) -> Table3, __id3__, attribute) ​ | | Table4((__id1__,​ __id2__) -> Table3, __id3__, attribute) ​ |
-where UK means UNIQUE and NN means NOT NULL.+ 
 +UK means UNIQUE and NN means NOT NULL.
  
 The specification of additional domains can also be made in a compact form, using the notation: The specification of additional domains can also be made in a compact form, using the notation:
teach/lbaw/artefacts_ebd.txt · Last modified: 29/03/2019 09:13 by Correia Lopes