They are called NoSQL databases, as you can’t use SQL to query them. They are: Key-value databases Document databases Column family databases Graph databases This article focuses on document databases and how to use a server called MongoDB. But before we jump into the technical details, ...
In that case, we can use theFOREIGN_KEY_CHECKSto turn offforeign key constraintsin MySQL Server. To learn that, let’s create two tables and populate them first. Example Code: # create a `student` tableCREATETABLEstudent(student_idINTNOTNULLPRIMARYKEY,student_nameVARCHAR(255)NOTNULL);# crea...
To fetch the foreign keys of a table in MySQL, we use the following block of code: As we can see, in the query mentioned above, we need to enter the database and table names to fetch the foreign keys. This task can be achieved using the following query: ...
Aggregation.The DBMS also has built-in aggregation capabilities, which lets users runMapReducecode directly on the database rather than running MapReduce onHadoop. MongoDB also includes its own file system called GridFS, akin to theHadoop Distributed File System. The use of the file system is ...
How to check email address already exist in MongoDB database ? How to check for duplicate? How to check for same value in collection of objects How to check if a window.locaton.href is successful loaded? How to check if form authentication cookie has expired in your custom authorize How ...
In this article we demonstrated how can we use the mongify utility to migrate an existing MySQL database to MongoDB. If you like this article or if you have any queries regarding the procedure, you are most welcome to share your comments and feedback here. We will come back with a new...
Install MySQL or MariaDB on your server. You can follow our guide on How to Install MySQL or on How to Install MariaDB. Use the Distribution drop down at the top of each guide to select the Linux distribution you want to install on. Note The steps in this guide are written for non-...
Method to use the .dump command-line option in SQLite to export your database Migrating Data from SQLite to SQL Server: Best Practices to Follow When Should You Use SQL Server: Key Use Cases What is SQLite? When Should You Use SQLite: Key Use Cases What is Microsoft SQL Server? Conclusio...
If you’d like to filter to see only TCP or UDP connections, use the-tor-uflags respectively: netstat-at Copy Output Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:ssh *:* LISTEN ...
Create a New App:Click the “Create New App” button to start building your database application. Choose a Template:Knack offers a variety of pre-built templates tailored for different use cases, such ascustomer relationship management(CRM),project management, orinventory tracking. Select a templat...