# Object Concepts

- [Query Object](/object-concepts/query-object.md)
- [PageQuery](/object-concepts/query-object/page-query.md)
- [Predicate-Suffix Field](/object-concepts/query-object/predicate-suffix-field.md)
- [Logic-Suffix Field](/object-concepts/query-object/logic-suffix-field.md)
- [Subquery Field](/object-concepts/query-object/subquery-field.md)
- [E-R Query Field](/object-concepts/query-object/er-query-field.md)
- [Custom Condition Field](/object-concepts/query-object/custom-condition-field.md)
- [Entity Object](/object-concepts/entity-object.md)
- [Enum Column](/object-concepts/entity-object/enum-field.md)
- [Foreign Key](/object-concepts/entity-object/foreign-key.md)
- [Sharding](/object-concepts/entity-object/sharding.md)
- [Patch Object](/object-concepts/patch-object.md)
- [View Object](/object-concepts/view-object.md)
- [Column Mapping](/object-concepts/view-object/column-mapping.md)
- [Group By Mapping](/object-concepts/view-object/group-by.md)
- [Inner Join](/object-concepts/view-object/inner-join.md)
- [Outer Join](/object-concepts/view-object/outer-join.md)
- [Having Object](/object-concepts/having-object.md)