MobileRead Forums - View Single Post - Display composite columns with comments in book details

BetterRed · 03-08-2023, 12:44 AM

Indeed it is a database term, been around since Peter Chen developed ER modelling in the 1970s. BTW: Chen says he was inspired by Bachmann's work - Codd came later.

Historically, composite attribute (column) has had a very specific meaning - a grouping of simple columns (attributes) into an composite attribute, classic example is an address = house no + street + suburb + postcode; like a composite materai is a substance made up of various simple materials - e.g. concrete = cement + sand + gravel + water.

Wouldn't be surprised if it's been redefined since.

03-08-2023, 12:44 AM	#5
BetterRed null operator (he/him) Posts: 21,745 Karma: 30237526 Join Date: Mar 2012 Location: Sydney Australia Device: none	Indeed it is a database term, been around since Peter Chen developed ER modelling in the 1970s. BTW: Chen says he was inspired by Bachmann's work - Codd came later. Historically, composite attribute (column) has had a very specific meaning - a grouping of simple columns (attributes) into an composite attribute, classic example is an address = house no + street + suburb + postcode; like a composite materai is a substance made up of various simple materials - e.g. concrete = cement + sand + gravel + water. Wouldn't be surprised if it's been redefined since. Last edited by BetterRed; 03-08-2023 at 01:08 AM.