More often than not every document in a database collection will not have all the same fields as other documents or it might be null or empty. So database administrators need to understand how to take this into account in their queries. In this article we’ll demonstrate a few queries that can help you filter … Continued
Introduction If you have data stored in MongoDB, there’s a good chance you’ll need to update certain documents from time to time. Fortunately, the Golang driver for MongoDB makes it quick and easy to accomplish this task. In this article, we’ll show you exactly how to update a MongoDB document with Golang using the mongo-go-driver. … Continued
Introduction The tutorial will explain the UpdateOne() API method to update a document with the Mongo-go-driver using the official Golang driver for MongoDB. It will also show how to update a MongoDB document with its BSON _id. In order to update a MongoDB document with Golang, both software packages must be installed on the same … Continued
Introduction This tutorial will explain how to perform MongoDB authentication, perform migration of MONGODB-CR to SCRAM-SHA-1 and explain the MONGODB-CR and SCRAM-SHA-1 authentication mechanisms. Know that the release of MongoDB version 3.0 has effectively replaced MONGODB-CR with SCRAM-SHA-1. As a result of this release, MONGODB-CR has now been deprecated. Users are strongly encouraged to upgrade … Continued
Introduction This is part three of the tutorial “Learn How to Secure MongoDB Community Version using Authentication.” Part two of this series showed how to enable the SCRAM-SHA-1 authentication mechanism and the X.509 authentication mechanism. This section will demonstrate how to enable the remaining final two MongoDB authentication mechanisms of Keyfile-based replica set authentication and … Continued
Introduction If you’re working with CockroachDB, it’s important to know how to perform basic operations, such as deleting records, in Java. Fortunately, it’s easy to connect CockroachDB to Java using the JDBC driver. In this article, we’ll provide instructions for deleting a record using the Java JDBC driver in CockroachDB via Maven in the Eclipse … Continued
Introduction If you’re using CockroachDB to store and access your data, you’ll need to know how to perform a variety of different queries. Before you can build and execute complex queries, however, it’s important to understand the basics. In this article, we’ll provide instructions for creating queries using the SELECT SQL statement and ordering query … Continued
Introduction This tutorial will demonstrate how to store an image on an Elasticsearch index and embed its raw encoded data and the EXIF meta data into an image using Python’s PIL and Piexif libraries. Examples will include how to export an elasticsearch image with python, export elasticsearch documents with python, convert base64 to pil images, … Continued
Introduction The tutorial will explain how to use the UpdateMany() method of the official Golang driver (mongo-go-driver) for MongoDB for updating multiple MongoDB documents in a single API call. MongoDB, Golang and the official Golang driver for MongoDB must all be installed on the same machine in order to update MongoDB documents with Go and … Continued
Introduction Backing up a database is an essential task for a DBA. It positively affects data integrity and accessibility. An image copy backup can be incremental or full. Because database and application requirements vary, it’s important to know the difference between the two backup types, so that you can use the most appropriate method to … Continued
