Yes, it is possible, I have converted mysql example Contact table to Firebird , here the steps to install the example :
Start Firebird ISQL Tool
CREATE DATABASE 'c:\GeniusConnectDemo.fdb' page_size 8192 user 'SYSDBA' password 'YOURPassword';
CONNECT 'c:\GeniusConnectDemo.fdb' user 'SYSDBA' password 'YOURPassword';
CREATE TABLE Contacts (
GC_ID INT NOT NULL primary key,
GC_SENSITIVITY INT,
GC_IMPORTANCE CHAR(1),
GC_INITIALS VARCHAR(32),
GC_FIRSTNAME VARCHAR(128),
GC_MIDDLENAME VARCHAR(128),
GC_LASTNAME VARCHAR(128),
GC_SUFFIX VARCHAR(32),
GC_JOBTITLE VARCHAR(64),
GC_COMPANYNAME VARCHAR(64),
GC_DEPARTMENT VARCHAR(64),
GC_GENDER CHAR(1),
GC_SELECTEDMAILINGADDRESS CHAR(1),
GC_BUSINESS_CITY VARCHAR(64),
GC_BUSINESS_COUNTRY VARCHAR(32),
GC_BUSINESS_POSTALCODE VARCHAR(16),
GC_BUSINESS_POSTOFFICEBOX VARCHAR(16),
GC_BUSINESS_STATE VARCHAR(32),
GC_BUSINESS_STREET VARCHAR(64),
GC_BUSINESS_FAX VARCHAR(32),
GC_BUSINESS_TELEPHONE VARCHAR(32),
GC_BUSINESS_TELEPHONE2 VARCHAR(32),
GC_EMAIL1ADDRESS VARCHAR(128),
GC_EMAIL1ADDRESSTYPE VARCHAR(64),
GC_EMAIL2ADDRESS VARCHAR(128),
GC_EMAIL2ADDRESS_TYPE VARCHAR(64),
GC_EMAIL3ADDRESS VARCHAR(128),
GC_EMAIL3ADDRESS_TYPE VARCHAR(64),
GC_HOME_CITY VARCHAR(64),
GC_HOME_COUNTRY VARCHAR(32),
GC_HOME_POSTALCODE VARCHAR(16),
GC_HOME_POSTOFFICEBOX VARCHAR(16),
GC_HOME_STATE VARCHAR(32),
GC_HOME_STREET VARCHAR(64),
GC_HOME_FAX VARCHAR(32),
GC_HOME_TELEPHONE VARCHAR(32),
GC_HOME_TELEPHONE2 VARCHAR(32),
GC_OTHER_CITY VARCHAR(64),
GC_OTHER_COUNTRY VARCHAR(32),
GC_OTHER_POSTALCODE VARCHAR(16),
GC_OTHER_POSTOFFICEBOX VARCHAR(16),
GC_OTHER_STATE VARCHAR(32),
GC_OTHER_STREET VARCHAR(64),
GC_OTHER_FAX VARCHAR(32),
GC_OTHER_TELEPHONE VARCHAR(32),
GC_TITLE VARCHAR(50)
);