Subject Firebird 2.5 maximum length for each type of identifier
Author Roberto Carlos
The following table describes the MySQL 5.5 maximum length for each type of identifier. It was taken from

Identifier Maximum Length (characters)
Database 64
Table 64
Column 64
Index 64
Constraint 64
Stored Procedure or Function 64
Trigger 64
View 64
Event 64
Tablespace 64
Log File Group 64
Alias 256 (see exception following table)
Compound Statement Label 16

Which would be these limits for Firebird 2.5?