Module org.eclipse.persistence.core
Package org.eclipse.persistence.mappings.structures
package org.eclipse.persistence.mappings.structures
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ClassDescriptionInterface used by the
ArrayCollectionMappingHelper
to interact with the assorted array collection mappings.Helper class to consolidate all the heinous comparing and merging code for the Array collection mappings.Purpose: In an object-relational data model, structures can contain "Arrays" or collections of other data-types.Purpose: Nested tables are similar toVARRAYs
except internally they store their information in a separate table from their parent structure's table.Purpose: In an object-relational data model, structures can contain "Arrays" or collections of other data-types.INTERNAL: A database field of object-relational type: either a java.sql.Array, java.sql.Struct, or java.sql.Ref.Purpose: Differentiates object-relational descriptors from normal relational descriptors.Purpose: In an object-relational data model, structures reference each other through "Refs"; not through foreign keys as in the relational data model.Purpose: A structure is an object-relational user-defined data-type or object-type.