CHAPTER ONE
INTRODUCTION
Nigeria Ports Authority is a government owned organization under the supervision of the federal Ministry of transport with responsibility of providing specific ports and labor services for the country’s meantime industry. One of their numerous duties and major functions is the provision of Cargo Handling Quays facilities. Right from the inception of this company, the billing system has been manually processed. The port complex is in the early stage of computerization and the manual method of preparing customers’ bills are delayed. A computer-based billing system is necessary for handling and preparing of accurate bills for customers. The new system will facilitate the prompt preparation of bills, easy retrieval of information, security to vital information and resource sharing among the billing department.