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Blog

Backendless Data Collection Tutorial for iOS

BackendlessDataCollection is a new class in the Backendless Swift SDK that conforms to the Collection protocol and enables you to retrieve and iterate over a collection of objects stored in a Backendless data table. This tutorial will show you how.

by Olha Danylova on September 24, 2019

Backendless Data Collection Tutorial for Java/Android

In this article, we’ll consider some practical examples of how to use the Backendless Data Collection library to its fullest extent. You can find code documentation and sources for the library here.

by Oleg Vyalyh on September 10, 2019

How to Create Custom Mapping Between Data Tables and Client Classes

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.

by Mark Piller on September 1, 2019

How to Load the Last Object From a Data Table Using API

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…

by Mark Piller on September 1, 2019

How to Declare a Relationship Between a Data Table and Geopoint(s)

Data objects in Backendless can be connected to related properties not only in other tables, but also with Geopoints. These relationships may be declared programmatically or using Backendless Console. In this post, we will review the process of declaring a Data-to-Geo relationship in a data table schema.

by Mark Piller on September 1, 2019

How to Add Data Objects Using Backendless Console

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.

by Mark Piller on September 1, 2019

How to Configure the Default Value for a Data Table Column

As data objects are being saved or updated with the API requests some properties of the objects may not have a value assigned to them. It may be necessary that for those properties a default value is assigned. This is identical to how relational databases may have a default value for a column.

by Mark Piller on September 1, 2019

How to Retrieve Database/Table Schema Using API

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.

by Mark Piller on September 1, 2019

How to Validate Data Object Properties With Regular Expressions

When saving or updating a data object in a persistent storage, it is often necessary to make sure a property follows a particular data format. For instance, properties like email address, a US phone number, a bank account number, a URL and many others may be validated with regex (a regular expression). Backendless makes it…

by Mark Piller on September 1, 2019
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