Arithmetic operations are fundamental mathematical calculations: addition, subtraction, multiplication, and division. These operations are essential for daily life and form the foundation of mathematics. Arithmetic comes from Greek "arithmos" meaning numbers
Trachtenberg System is a faster calculation method developed by Jakow Trachtenberg during WWII. System divides complex calculations into simpler steps for faster processing. Focuses on speed and accuracy without extensive memorization
Multiplication means adding integers a specific number of times. Division means dividing integers into equal parts. There are four basic arithmetic operations for integers
A divisor is an integer that can be multiplied to produce another number. An integer is divisible if it can be divided without remainder. Divisors can be positive or negative, but often only positive ones are mentioned
A number is divisible if it can be divided by another number. A completely divisible number leaves a remainder other than zero
PostgreSQL 10 introduced partitioning to divide large tables into manageable pieces. PostgreSQL 11 added default partitions and automatic index creation. PostgreSQL 12 introduced partition elimination and improved performance