A column (i.e., field), defined within the database's table, contains a name definition, and one or more defined processes that are column (i.e., field value) actions. Column actions are value-sets, value-deletes, or value modifications. A column process can commence either just before the column value action occurs, or after the column action occurs. All column actions are encapsulated within row actions.
Column specifications also contain data type specifications.
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