There are seven Swaras of a Thaat forever. but a raag minimum five swaras can be accomplished with Jati in a raag of swaras can be described by the number of use.
There are three basic Jaati :
Sampurna - Consists of seven swaras
Shadava - Consists of six swaras
Odava - Consists of five swaras
With the combination of these three jati's total nine jati's can be obtained
Sampuran Sampuran: Raags in this classification will have all the seven notes in the ascending as well as descending movements.
Sampuran Shadava: Raags in this Jati will have seven notes while ascending and six notes while descending.
Sampuran Audava: Raags in this category will have seven notes while ascendingand only five notes while descending.
Shaudava Sampuran: Raags in this classification consists of six note ascending and seven descending notes.
Shaudava Shaudava: It has six notes ascending six descending.
Shaudava Audava: Raags in this Jati will have six ascending and five descending.
Audava Sampuran: It has five ascending and seven descending.
Audava Audava: Raags in this category will have five ascending and five descending.
Audava Shaudava: It has five ascending and six descending.