The document explains the Mendix 'database connector', a tool designed for seamless database integration using low-code development. It outlines benefits such as easy JDBC compatibility and plug-and-play functionality, while offering a step-by-step guide to secure database credentials, execute SQL statements, and properly format inputs. The author, Kamala Nathan, a Mendix expert, emphasizes the simplicity of adapting to SQL within Mendix's framework.

1. MENDIX
DATABASE CONNECTOR
+

2. Hi I’m Kamala Nathan, Mendix
Expert Certified, Senior Technical
Lead, MxTechies
+

3. +
I am here to explain what Mendix
“Database Connector” is
and how it works.

4. What is
+

5.  Mendix is the pioneer of low-code development
providing great yet simple digital transformation
methods.
 MxTechies is a digital transformation leader in
the Mendix Low Code space.
 Out of the several methods for
migration/extension of the current database from
any legacy system to Mendix, Database Connector
is the best.
This presentation will cover everything you need
when you start working with the Database connector
for Mendix.
+

6. Why
Database Connector?
+

7. Let’s Find Out.
+

8. J
D
B
C
he first reason is that you can simply connect with
all the databases that the JDBC supports
+

9. Like all other Mendix components, Database
Connector works well as a plug-and-play
activity. No customization or setup is
necessary.
+

10. The big part is writing the SQL statements,
which is a little different from how we usually
do it. Once we get the hang of it, it becomes
very simple.
+

11. Need further assistance? Don’t worry,
I’m going to help you with
4 Simple Steps.
Step 01 How to secure your database credentials from attack
Step 02 How to execute and SQL Statement
Step 03 How to pass your values to a SQL statement
Step 04 Fixes and precautions to avoid a few common errors
+

12. 1. How to secure your database credentials from
attack?
 To re-use the database configuration in multiple
requests, go for a configuration page instead of
constants.
 Make sure to store your password in an encrypted
format.
 Upon saving, move it to another attribute allowing
the configuration page to display an empty value
whenever opened.. +

13. The save microflow would look something like th
+

14. 2. How to execute an SQL
Statement
 Store your SQL statement in a Variable
 Add the action activity Execute Query when you want
to fetch data from database and Execute Statement
for any other operations.
 Execute Query will expect an object to create a list
of the same objects fetched from database.
+

15. Note: In the above image the jdbc url has a prefix
“jdbc:mysql” which will differ based on the database
you want to use. For example “jdbc:postgresql” for
postgre SQL. +

16. Example for executing Query in a
microflow.
+

17. 3.How to pass your values to an SQL
statement
 When you want to pass inputs to an SQL statement Mendix
uses single quotes to define a String which is similar
to SQL.
 This makes writing an SQL Statement tricky.
 Here’s what we need to keep in mind.
+

18. 3.How to pass your values to an SQL
statement
 To pass a String instead of using single quote once
we have to use it thrice
For example: '''+$NewEmployee/Firstname+'''
 To pass a date It has to be parsed to String
Example:
'+formatDateTime($NewEmployee/JoiningDate, ‘
dd-MM-yyyy')+'
+