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Key-Value Operations

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    How to perform CRUD key-value operations in Couchbase.
    This guide is for Couchbase Capella.

    Introduction

    Every item in a database goes through the basic CRUD cycle, which is typical of an application’s use of data. CRUD stands for create, read, update, and delete:

    • Create: when data is first inserted into the cluster

    • Read: when an application retrieves the data

    • Update: when data is modified to reflect a change in the state represented by the data

    • Delete: when the data is no longer needed

    The Key-Value (KV) or Data Service offers Couchbase clients the fastest and simplest way to create, retrieve or mutate data where the key is known.

    Before You Begin

    If you want to try out the examples in this section, follow the instructions given in Create a Free Account and Deploy Your Database to create a free account, deploy a database, and load a sample dataset.

    Couchbase Clients

    Clients access data by connecting to a Couchbase cluster over the network. The most common type of client is a Couchbase SDK, which is a full programmatic API that enables applications to take the best advantage of Couchbase. This developer guide focuses on the most commonly-used SDKs, but full explanations and reference documentation for all SDKs is available.

    Read the following for further information about the clients available:

    It is also possible to access document data via the Couchbase Capella UI.

    The Documents UI can be used to perform CRUD operations
    Figure 1. Document Data Access

    For further details, refer to Manage Documents.

    Next Steps

    Key-Value Operations guides: