Backendless

  When working with data, particularly user-submitted data, you often need to validate it. For example, if we are creating a database in which there is a “site” field and corresponding IP address field, it would be very useful to ensure that the data written to these fields is in the appropriate format.

In another post, we describe how data tables in Backendless map to the client-side classes whose instances contain persisted data objects. However, there are scenarios when the default mapping is undesirable. In that case, Backendless client libraries provide an API to override the mapping.

In another article, we wrote how to load the first object from a data table using API. For the purpose of symmetry (and out of common sense), there is also an API to load the last object from a data table in your Backendless Database. The last object is determined by the time when it is…

Backendless database provides a very simple, but powerful API for storing, searching, updating or deleting application objects. The “feature 1” post demonstrates how to save objects with relations in Backendless using the APIs.

Backendless provides an easy-to-use API to introspect data tables. Given a table name, the API provides information about table columns, their names, data types, default values, etc. If a column represents a relationship, it is properly denoted as such in the provided information.

In another article, we described how a data object may have a related geopoint (or a collection of geopoints). One of the benefits of data-to-geo relationships is search by distance. That means Backendless can search for data objects using the location of the related geopoints.

Connecting users with their related data is a key function of user management. When you register (or update) a user object, you may need to create a relation between the user and some other entity/object stored in your Backendless Database. Since a user object is structurally a collection of properties, it is very easy to…

In other articles, we have covered: how to declare a geo-to-data relationship in a data table schema and how to create relationships between an object in that schema and geopoints. Of course, both of the operations above can also be accomplished with the API. In this post, we are going to show how to retrieve…

In other articles, we have reviewed multiple techniques for loading data objects from persistent server-side storage. There is a list of all articles categorized by topic. In this post, we are going to review the API for loading data objects using an SQL query.