In this post, you’ll learn about the error message -540 the definition of table table name is incomplete because it lacks a primary index or a required unique index in the IBM DB2 database , the reason why it occurs along with the solution to fix it
IBM DB2 Error Message
-540 the definition of table table name is incomplete because it lacks a primary index or a required unique index
Reason for the Error
The table named was defined with a PRIMARY KEY clause or a UNIQUE clause.� Its definition is incomplete, and it cannot be used until a unique index is defined for the primary key (the primary index) and for each set of columns in any UNIQUE clause (the required unique indexes). An attempt was made to use the table in a FOREIGN KEY clause or in a SQL manipulative statement.
Solution
Define a primary index or a required unique index on the table before referencing it.
