Sorted:

How to create classes and objects in PHP?

How to set up Maven in IntelliJ IDEA?

How to view the history of executed SQL commands in db2?

How to use the round function in PHP to calculate a sum

What is the working process of bindservice in Android?

How do you set a field to allow null values in DB2?

How to set global variables in Python.

What is the method to recover mistakenly deleted data in DB2?

How to configure a field in Oracle to allow null values?