Sorted:

What should be considered when creating a table in Oracle?

How do you create a tablespace in sqlplus?

What are the characteristics of MySQL aggregate functions?

What are the application scenarios of the Java proxy pattern?

How to troubleshoot when PHP exec is not working as expected?

How to connect after creating a user in SQL*Plus?

How to create an executable file in Python?

How can MySQL pop up a black window at a scheduled time every day?

How to convert BigDecimal to Integer in Java?

How to optimize importing a large amount of data with PHP exec?