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table_constraint_clause The optional table CONSTRAINT clause specifies a list of integrity constraints which new or updated entries must satisfy for an insert or update operation to succeed . The optional constraint clauses specify constraints or tests which new or updated entries must satisfy for an insert or update operation to succeed . For deceased veterans , requests will be accepted from next-of-kin ( unremarried widow or widower , son or daughter , father or mother , brother or sister of the deceased veteran ) . She collaborates successfully with Diversity and Human Resources departments in recruitment and retention efforts . Its main activities are exploration and production of crude oil and natural gas ; refining , marketing , supply and transportation ; and manufacturing and marketing of petrochemicals . column_constraint_clause The optional column constraint clauses specify a list of integrity constraints or tests which new or updated entries must satisfy for an insert or update operation to succeed . Site design includes water , gas , storm and sanitary line sizing and routing , grading , drainage , sidewalks and parking areas .