There are several types of Visual FoxPro v6 0 triggers5

There are three types: database tables, free tables, and virtual tables (views).

Database tables and free tables.

Anything else?

The functions included in Visual FoxPro and the additional functions can be divided into the following categories.

String functions.

These functions manipulate character data.

Data conversion functions.

These functions transform data from one type to another.

Datetime function.

These functions generate and manipulate date and time data.

Numeric functions. These functions operate or return numeric data.

Character type c numeric type n

Logical type l date type d

Remarks mArithmetic expressions, character expressions, relational expressions, date expressions, logical expressions.

In visual, data tables are divided into two types: free tables and database tables, and the meaning of the function recno() in VFP is the current record number, and the extension of the -project file is pjx

The command go top means that the record pointer points to the first record--- command skip means that the record pointer moves down one pointer.

There are two types of parent and child classes for the VFP base class.

1) Numeric Numeric data consists of numbers, decimal places, plus and minus signs, and the letter e.

13 kinds. They are: character type (C), currency type (Y), numeric type (N), floating type (F), date type (D), date type (T), double type (B), integer type (I), logical type (L), note type (M), general type (G), binary character type (C), binary note type (M).

Data types in VFP6: Variables and arrays can be used in the following types: character, currency, date, date-time, logical, and numeric.

The data types that can only be used in a field are: double, floating-point, general-purpose, integer, note, character (binary), and note (binary).

Numeric, Character, Date, Date, Currency, Logic, Notes, General.