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I need to know this erd and schema is wright or not

image text in transcribed I need to know this erd and schema is wright or not

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Recommended Textbook for

Database And Expert Systems Applications 15th International Conference Dexa 2004 Zaragoza Spain August 30 September 3 2004 Proceedings Lncs 3180

Authors: Fernando Galindo ,Makoto Takizawa ,Roland Traunmuller

2004th Edition

3540229361, 978-3540229360

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