In short (and by its name), data model - is a model (representation) of some data stored in your database. It solves two major problems: Presents the data to the end user in a more friendly and familiar way. Contains some meta information that helps EasyQuery components to build query statements in SQL or other query languages. Any data model contains the following main sections:
Create virtual (calculated) attribute in you model/tutorials/add-virtual-attribute-in-model
Virtual attributes: what are they for and how to add one
Adding a new operator to your data model/tutorials/add-new-operator
Here you can find all information about how to add a new operator to your data model either using Data Model Editor (DME) or with a code
Common terms Database - may refer to any data storage but in most cases we mean some relational database such as MS SQL Server, My SQL, Oracle, etc. Result set - a result of some search request (query). Usually, is presented as tabular data. Query - a search request. Query condition - one of the search terms (for example: "Customer name starts with 'A'")
How to make a field to field comparison/how-to/field-to-field-comparison
The instructions on how to add a condition which compares a field against another field instead of constant value.