When to use NoSQL vs. SQL NoSQL databases like MongoDB are a good choice when your data is document-centric and doesn’t fit well into the schema of a relational database, when you need to accommodate massive scale, when you are rapidly prototyping, and a few other use cases. MongoDB...
Relational databases have a long-standing position in most organizations, and for good reason. Relationaldatabases underpin legacy applications that meetcurrent business needs; they are supported by anextensive ecosystem of tools; and there is a large pool of labor qualified to implement and maintain ...
If you look up this question on the Internet, you will find not only that there are hundreds of different database management systems, but also that there are different categories of databases, such as SQL and NoSQL databases, key/value databases, row and column databases. In this article, ...
With SQL, you use the SELECT statement to retrieve one or more rows from a table. You use the WHERE clause to determine the data that is returned to you. This is different than using Amazon DynamoDB which provides the following operations for reading data: ExecuteStatement retrieves a single...
For your next web app I’d start with your usual relational database of choice. Once you get to the stage when you have the performance/scalability issues to deal with then you might take a bigger look into the NoSQL/key-value stores. ...
NoSQL database: Stores processed tracking data and user information captured from the website and the data-processing service. Separate teams in your company develop and own these services. Each team uses containers to build and deploy its service. This new strategy allows the development teams to...
Can you export a MongoDB database? To export information from MongoDB, usethe command mongoexport. It allows you to export a very fine-grained export so that you can specify a database, a collection, a field, and even use a query for the export. ...
Here are some SQL statements that can useGenreAndPriceIndexto improve performance. We assume that theMusictable has enough data in it that the query optimizer decides to use this index, rather than simply scanning the entire table. /* All of the rock songs */SELECT*FROMMusicWHEREGenre='Rock...
What pushes developments and evolutions of database systems is that under the wave of global informatization, software systems continuously penetrate various industries. While at the same time,different industries, needs, and use cases keep putting forward new challenges to database systems. ...
is a big industry and community around Data Warehouses. (I’ve been a member or speaker with TDWI,The Data Warehousing Institute, for 15 years, and recommend it if you want to get involved). Almost universally, these are built with relational database technology such as SQL Server or ...