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 Post subject: JPwH Errata: Page 819: a new table should be a new record
PostPosted: Sat Aug 25, 2007 8:40 am 
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Joined: Wed Aug 02, 2006 9:40 pm
Posts: 13
Location: China
Insertion is the operation of creating a new table from an old table by adding a row. SQL databases perform this operation in place, so the new row is added to the existing table:
insert into ITEM values (4, 'Fum', 45.0)

should be

Insertion is the operation of creating a new record from an old table by adding a row. SQL databases perform this operation in place, so the new row is added to the existing table:
insert into ITEM values (4, 'Fum', 45.0)

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 Post subject:
PostPosted: Mon Aug 27, 2007 7:07 am 
Hibernate Team
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Location: Switzerland
No, a relvar is a variable with a time-varying value and adding a tuple to a relvar effectively creates a new value that is assigned to that variable. If you don't understand this, read the next sentence in the book which explains the situation in SQL.

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