TypeError occurs when performing operations between incompatible data types. Python does not support arithmetic operations between strings and integers. Error appears when using + operator between string and integer
Integer is a data type representing mathematical integers. Integers are commonly stored as binary digits in computer memory. Hardware provides integer representation for registers and memory addresses
VBA Type Mismatch error (Run-time error-13) occurs when assigning values between different data types. Error appears when assigning non-numeric or text values to variables
Column types like nvarchar(1) and decimal(18,0) cannot store non-integer values. SQL Server only supports float(24) and float(53) types
Excel has five main data types: Number, Date/Time, Text, Logical, and Error. Numbers can store up to 15 significant digits with double-precision floating point. Text data type holds up to 32,768 characters, with 1,024 visible in cells. Logical data type stores TRUE/FALSE values, case-insensitive. Error data type indicates calculation errors, preceded by # symbol
CHAR is fixed-length, VARCHAR is variable-length. CHAR uses static memory allocation, VARCHAR uses dynamic allocation. CHAR supports up to 255 characters, VARCHAR up to 65,535 characters