![]() ![]() Given below is the image depicting the same. Using a database designer, we created two tables called Album and Song and defined a one-to-many relationship between Album and Song. We have discussed two famous ORM’s that you can use with MongoDB and Flask. Sudo systemctl status mongod # to check status MongoDB ![]() Sudo systemctl stop mongod # to stop MongoDB sudo systemctl start mongod # to start MongoDB Use the below-given commands to manage the MongoDB server on the local machine. We have already configured it with our current flask tutorial example application. MongoDB is a non-relational document-based database. In this section, we will learn how to use ORMs rather than using raw SQL scripts to work with databases in Flask. # The MongoEngine connection string.Īll low-level features of database management by the ORM have been wrapped under Flask Click commands, which we can see using flask fab –help on the command line. Flask-Appbuilder takes the database details on the connection string from the mentioned values. Open the configuration file and notice the below-mentioned values. When using ORMs, the programmers do not have to write complex SQL queries and commands to perform base SQL commands. It overcomes database-specific SQL differences. ![]() Use Migrations to keep a track of database updates.Developers can work with objects instead of tables and SQL.The benefits of using an ORM are listed below: ORMs under the hood transparently translate the objects (database models) into database commands or SQL statements. Object Relation Mapper, are quite popular. Furthermore, we talk about Flask-MongoEngine, Flask-SQLAlchemy, and Flask MongoAlchemy. In this tutorial, readers can draw a comparison between the discussed databases. ![]()
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