Hello Kathiresan,
the hdbtable configuration syntax is described here.
Regarding your concrete "HOW TO DEFINE markers:
- an autoincrement cannot be defined in a hdbtable file
- BIGINT is valid sql data type which can be used also in a hdbtable
- a primary key has to be defined with the table.primaryKey.pkColumns keyword
- a default value can be defined using the parameter option defaultValue
- a unique column can be defined by the unique parameter option
Please check the linked hdbtable configuration syntax for whole truth.
Best Regards,
Florian