INVENTORY MANAGEMENT SYSTEM USING DISTRIBUTED SYSTEM APPROACH GOH LIRONG

Transcription

1 NVENTORY MANAGEMENT SYSTEM USNG DSTRBUTED SYSTEM APPROACH GOH LRONG This report is submitted in partial fulfillment of the requirements for the Bachelor of Computer Science (Software Development) FACULTY OF NFORMATON AND COMMUNCATON TECHNOLOGY UNVERST TEKNKAL MALAYSA MELAKA 2007

2 ABSTRACT The report is about inventory management system using distributed approach. t is a system which will be used in MR & E M& department in Komag USA (M) Sdn. t is used to keep track T assets and standard disk in lube production area. This report contains seven chapters. First chapter is introduction, it describes the project background and the purpose of develop it. Second chapter, literature review and project methodology, is about findings of current system to be used as reference. This chapter also contains method to be used when implement the system, the requirements needed and schedule to be set out. Chapter three, analysis is about analyzing the problems of current system and investigates the requirements of the proposed system in details. Chapter four is design. t contains two sections; high level design and detailed design. Chapter five is implementation, describes the progress of the development status of each module. Chapter six is testing, it is regarding the test design and the results of testing for each module. The last chapter, project conclusion; states the weakness and strength of the system, the improvements needed to perform, and also the contribution to the company.

3 ABSTRAK Laporan ini mengenai sistem pengurusan inventori yang menggunakan pendekatan pengagihan. a adalah satu sistem yang akan digunakan dalam jabatan MR &E M& di Komag USA (M) Sdn. Sistem ini digunakan untuk mengesan asset-aset T dan cakera yang digunakan dalam pelincir kawasan pengeluaran. Laporan ini mengandungi tujuh bab. Bab yang pertama adalah pengenalan, ia menggambarkan latar belakang projek dan tujuan membangunkannya. Bab kedua, ulasan karya dan projek kaedah, mengenai penemuan-penemuan sistem yang sedia ada untuk dijadikan sebagai rujukan. Bab ini juga mengandungi kaedah digunakan apabila membangun sistem tersebut, syarat-syarat yang diperlukan dan jadual yang diperlukan. Bab tiga, analisis iaitu menganalisis masalah-masalah yang terdapat dalam sistem sedia ada dan menyiasat keperluan sistem yang dicadangkan secara terperinci. Bab empat adalah reka bentuk. a melingkungi dua seksyen; reka bentuk dan reka bentuk secara terperinci. Bab lima adalah pelaksanaan, menggambarkan kemajuan pembangunan setiap modul. Bab enam adalah menguji, ia adalah berhubung reka bentuk untuk menguji dan hasil-hasil ujian untuk setiap modul. Bab terakhir, menunjukkan kesimpulan; menyatakan kelemahan dan kekuatan sistem, pembaikan yang diperlu untuk dilaksanakan, dan juga menyatakan sumbangan sistem kepada syarikat

4 CHAPTER NTRODUCTON 1.1 Project Background This project is named nventory Management System using Distributed System Approach. t will replace the current system, system auto trigger on working standard set expired date. The current system is developed using Microsoft Visual Basic 6.0 and Microsoft Excel as database. t only has one function, which is trigger users about the expired date of working standard set. The system to be will be developed using Java language and MySQL which act as database. t provides more functions compare to current system. Functions which add in are such as to keep record of all hardware and software which used in production line. With this system, users are able to maintain the hardware, software which used in a more systematic way. The proposed system will be using distributed system approach. t means that each computer will be located one inventory management system, whereas the database will be located at the server PC. Each computer will access data from the server PC. Data which modify by users will be sent to server PC as the database is located at there.

5 1.2 Problem Statement(s) Current system, system auto trigger on working standard expired date is not able to retrieve data from multiple excel worksheet. This means that all data must enter in the same excel worksheet. t is not a good solution to keep all different data in one excel worksheet as it is hard for users to make changes or to search for related data. Besides, the excel worksheet which act as database doesn't give a good solution for users. This is due to excel does not allow a blank row occurs in between data. t means that when a blank row occurs in between of data, the Calculate button which used to calculate the remaining days (current date minus expired date) is not able to function properly. n other words, the data after the blank row will not get the correct remaining days. Last but not least, current system easily accessed by anyone in the company. The excel worksheet can be accessed by any staff in the company and modification can be done easily. t is located in a sharing drive, which means that everyone is allow to search, update, and delete the data. 1.3 Objectives The objectives to develop the system are as below: To enable the users to manage the data such as add data, delete data, update data and search data in a systematic way To provide accessibility for specific users such as specialist engineers to access the data

6 To provide more functionalities such as store data of hardware and software 1. Scopes The projects will be developed based on specific area and the scopes of this project are as below: User Specialist engineer (lube) under MR& E M& department Platform Windows XP Professional 2003 Size Client- server system. Module There are three modules to be developed in this project. The first module is about authentication, the second module contains three main functions such as hardware, software and standard disk and the last module is generate report of data about inventory for users. The first module required users to key in D and password. All users will have their own D and password once they are employee of Komag USA (M) Sdn. This module only focus on authenticate users' status whether they are allow to access the system.

7 Second module allows users to use hardware, software, and standard disk functions. Users are able to add data, update data, delete data, and search data within three functions. All related data will only focus on lube production. Another two functions are able to display the information of the company and also MR&E department's background. Last module, the system is able to generate report of inventory which is located in database for users. This module only focus on generate data but not able to be print out by users. 1.5 Project Significance With this system, specialist engineer (lube) will gain benefit from it. As, normally when specialist engineers want to update or delete data, they need to trace it one by one before make any changes. With the proposed system, no longer need them to trace it manually but just key in the instrument D or serial number to trace the data. Besides, with the additional functions such as hardware and software buttons; allow specialist engineer to maintain the hardware and software in a systematic way. They will be able to check whether the specification of hardware is still able to support the instruments in production line in a short time compare to check it manually. n addition, the database in proposed system allows more data to be stored compare to using Microsoft Excel as database. The system also able to generate the general data about inventory where enable users to view all data about inventory. Lastly, with ability to authenticate, it will ensure only specialist engineers (lube) are able to access. This will reduce the percentage of system- being accessed by others and also prevent data being disclosed to outsiders.

8 1.6 Expected Output At the end of this project, the users should be able to make use of this system to manage the inventory. n the other hands, the system should be able to implement in the company which client and server are able to function well. 1.7 Conclusion nventory Management System using Distributed System Approach is using client- server concept. All data which key in by specialist engineers will be kept in a database which located in server. The server will retrieve data and sent to client when there is a need or requested by users. The data for software, hardware and standard disk will only focus on lube production line. As a conclusion chapter one is about the project background, problem statements, objective, scope, project significance, and expected output of the project. Next chapter is about to search related materials of existing system. With the materials, one will get some ideas from that and make improvements on to be system.

9 LTERATURE REVEW AND PROJECT METHODOLOGY 2.1 ntroduction This chapter, literature review and project methodology; requires one to do some research on existing system and compare with proposed system. Then, describe approach which apply on this project and determine activities involved in each stage. Followed by determine project requirements and come out with a Gantt chart at the end of this chapter. 2.2 Facts and findings Domain This project is focused on CT in Advanced Manufacturing Technology. The system to be will be used in one of the department at Komag USA (M) Sdn. Komag USA (M) Sdn is a company which supply thin film disk or hard disk in general terms. The system will be used to manage the hardware, software and standard disk that are used in lube production. Lube, also called lubrication; is one of the manufacturing process applied to the disk's surface to improve durability and reduce surface friction.

10 2.2.2 Existing System nventory Management System This is a system which developed by MACROWEB services for Solectron. t is used by Solectron's staff. This system allows users to manage what products are currently in stock and where they are located. Further more, users are able to find products by name or model number. Some users have rights to update specific tables, while others can only review information. Administrators of the system can use provided interface to add new employees and assign some basic attributes to the person. t means that used a standard role-based approach to implement this system. Besides, concept of distributed system also applies in this system where every PC will have one copy of the system and the database is located at server site. Software which used are ASP, SQL Server 2000 and Codecharge Studio. nterface of the system are shown in figure 2.1 and figure 2.2. Figure 2.1: nterface for search product

11 Figure 2.2: nterface for administrator to add users nventory Setup Application This system is developed by 3H Technologies for nformation Technology Division (TD) at the National Capital Region of the General Services Administration. The number of users approximately 100 and 71 field sites with 1,000 users. There are three main sections which are inventory, setup room or configuration management and system maintenance. Each sections has it owns functionalities. nventory section, enable users to enter and manage assets, assign assets to people or organizations, track asset assignment history, audit assets and search for assets using multiple criteria. Setup room or configuration management enable one to create, manage jobs and offsite repairs, track job status over time, track assets, accessories, suppliers, people involved in each job and search for jobs using multiple criteria. The last section, system maintenance enable one to set job type, status, priorities, asset status, type, models, accessories and manufacturers. Besides, the system applies distributed system approach where each PC has it owns system and the database is located at server. nterface of the system are shown in figure 2.3 and figure 2.

12 Figure 2.3: nterface for edit asset d wanufoctwer Mod111 Nume /No. Ossuiption Figure 2.: nterface for searching asset models

13 T Asset and nventory Management This is a system which produced by Manage Engine Company. t provides T asset management and network inventory tracking functionality covering both hardware and software across Windows and Linux workstations. Features of this system including ability manually add missing software, ability to attach assets to scan workstations, audit different report which shows new and missing software, ad-hoc and scheduled asset management audits, list all installed software packages, and list all complete hardware inventory covering computer, CPU, hard-disk, peripherals, ports and NC. nterface of the system is shown in figure 2.5. Figure 2.5: nterface for Windows platform Comparison of existing systems with proposed system are shown in table 2.1

14 Approximately for 100 users Approximately for 1000 users Windows platform Linux platform Distributed system Client-server system Centralized database Product Management T Asset Management Manually add details of T asset Manually add details of product Table 2.1: Comparison existing system with to be system nventory nventory T Asset and To be System Management Setup nventory System Application Management d d d d d d (Based in Penang site) d d d d d

15 Auto detect T asset Print report to users Table 2.1: Comparison existing system with to be system (Continue) Technique RAD is another approach which applicable for this project. RAD stands for Rapid Application Development. t is a software development process developed initially by James Martin in the 1980s. According to article of CMS (Centers for Medicare and Medicaid services), RAD aims to produce high quality systems quickly, primarily through the use iterative prototyping, active user involvement and computerized development tools. This approach is suitable because the tools which used for RAD may include Graphical User nterface (GU) builders, Computer Aided Software Engineering (CASE) tools, Database Management Systems (DBMS), fourth-generation programming languages, code generators, and object-oriented technique. Further more, this project will be using NetBeans 5.5 with JDK 1.6 and MySQL to develop. RAD is the most appropriate approach for condition where the data for the project are already exists either completely or in part and also largely comprises of reporting data or analysis data. n this case, the data for this project already exists in Microsoft Excel worksheet. So, it proves that this project fits the condition of RAD. Besides, the functionality of this system to be is clearly visible at the user interface. Hence, the GU design is simpler. These fit the requirements for using RAD approach which stress on simplicity and usability on GU design.

16 Lastly, this project is in small to medium scale and decisions can be made by a small number of people who are available. These are one of the reasons that RAD is suitable to apply in this project Project Methodology OOAD stands for object oriented analysis and design. t is part of the development of large scale systems and programs which use UML. t applies object modeling techniques to analyze the requirements for a system. Reason of using OOAD is it is used in developing programs that will have an extended life time. Besides, applying OOAD principles are able to make the system scalable, maintainable, and flexible. The model which will be used in this methodology is spiral model. This model of development combines the features of the prototyping model and the waterfall model. According to Barry Boehm in his article A Spiral Model of Software Development and Enhanced from 1985, each phase starts with a design goal and ends with the client. The advantages of using spiral model are able to cope with the changes that software development generally entails; software engineers able to work on the project earlier. There are four phases which are planning, evaluation, risk analysis and engineering. These four phases are iteratively followed one after other in order to eliminate all the problems, which were faced in "The Waterfall Model". terating the phases helps one to understand the problems associated with a phase and dealing with those problems when the same phase is repeated next time. n the plan stage, objectives and constraints of the project are determined and documented. The objectives and other specifications are fixed.so that one able to decide

17 to use appropriate approaches to develop the system. For an example, one needs to determine the problems of current system, objective of developing a new system, scope of to be system and others which related. Then, start to plan the schedule and milestone to enable the project meet the timeline. Next stage is risk analysis. This is the most important phase in spiral model. n this stage, steps need to be taken are such as identify risks that might occur and also come out with solutions to overcome the risks. For an example, analyze the risks or problems that might occur and find solution to overcome it. The third phase is engineering. This is where the actual development of the project is carried out. Activities such as design system prototype, develop the system based on the prototype and develop the completed system with coding will be done in this stage. The output of this phase is passed through all the phases iteratively in order to obtain improvements in the same time. The last phase is customer evaluation. t is much similar to testing phase. The developed system is passed to the customer in order to receive their comments and suggestions which can help in identifying and resolving the problems. 2. Project Requirements 2..1 Software Requirement Table 2.2: List of Software Requirements No. Software Description 1. NetBeans 5.5 To develop the system 2. ( JDK 1.6 To develop the system by using Java

18 Table 2.2: List of Software Requirements (Continue) MySQL As database MySQGconnector-Java To connect MySQL with Java Java documentation To refer when write coding 2..2 Hardware Requirement Table 2.3: List of hardware for development environment No. Hardware Description 1. Processor ntel Processor 1500M.z or faster 2. RAM 512MB or higher 3. Hard disk 0GB minimum or higher No. 1. Table 2.: List of hardware for testing environment Hardware Description 2 PC(s) One PC act as server, one PC act as client UTP cable Switch To connect from server to switch, from switch to client A device use to connect server and client

19 2..3 Other Requirements No Table 2.5: List of other requirements Others Description A Lab To test out the system Cooperation To get the info of products and the from Miss Ling requirements of the system (specialist engineer) 2.5 Project Schedule and Milestones There are five stages in project management. t is a guideline for one to start the project. Five stages are initiating, planning, executing, controlling and closing. The first stage is initiating. First, need to decide the title of project which wants to develop. Then, starts to define the overall project goal, define general project scope, and also define general expectations from users or others as appropriate. Besides, one also needs to determine what the project should accomplish. For an example, prepare a proposal; contents include project summary, project background, project objective, project scope and project requirements. The second stage is planning. After get some ideas for projectj one need to plan how the project is carried out. For an example, use Gantt chart as a guide. n Gantt chart, list down all the task and activities then set the dateline for each task and activities. These are to ensure that all tasks which carry out will be in timeline. Next stage is executing. After planning, start to carry out the tasks. For an example, the first item in the Gantt chart is discussion with supervisor, then one have to

20 make appointment with supervisor to discuss the details. Most of the activities in this stage are about meeting with supervisors, communicating with stakeholders, firefighting to resolve problems and securing necessary resources to complete the project plan. After executing, next step is controlling. Here controlling means that to monitor deviation from the plan. This is to ensure the tasks or activities are in timeline. f one of the tasks is out from the timeline then corrective action need to be taken so that it will match the actual progress with the plan During this stage, project will be evaluated and changes will be requested too. Due to this reason, project may need to be rescheduled and there is a possibility that project scope need to be changed if modification made to the project. As project need to be rescheduled, the stage will return to planning stage and again the project will start from that point. At the last stage is closing stage. This means the project comes to the end. The project should be completed. Outcome of this stage for PSM 1 is the completed thesis and a fully developed system.. n figure 2.6, the Gantt chart shows the activities involved and the time line given to develop the system.

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22 2.6 Conclusion As conclusion, the project will be focused on CT in Advanced Manufacturing Technology. The findings for existing system help one to identify their features and come out with a better system for Komag USA (M) Sdn. OOAD approach will be applied in this project and spiral model will be guidance for one to develop the system. n this chapter, requirements of this project such as hardware, software also stated before one analyze the proposed system. Finally, a Gantt chart will be a reminder for one to ensure the project completed in the timeline. Next chapter, analysis will analyze the problems and the requirements for system to be.

23 CHAPTER 11 ANALYSS 3.1 ntroduction Analysis stage needs one to analyze the problems of current system. With the details problems of current system, these will be guidance for proposed system. This chapter will be a description of the requirements to be supported by the proposed system. Requirements for the proposed system include data requirement, functional requirement, non functional requirement and others requirement. 3.2 Problem analysis Current system scenario is user needs to open the Microsoft Excel worksheet. Then, user can choose to view data, search data, add data or delete data. This system is only applicable for hard disk which used in lube production. All the functions will be done manually by him or her. f user wants to delete data, he or she needs to search it manually. After found the data, he or she needs to highlight it and click delete button on the keyboard. Any changes made to the data such as add data or delete data, the user needs to click the Refresh button to get the latest remaining days. n other hand, the system which developed using Microsoft Visual Basic 6.0 will send reminder to user's account every morning at eleven o'clock. This is scheduled by using scheduled

24 tasks. The contents of the include the hard disk serial number, expired date, level, lube type, location, slope, and remaining days. Figure 3.1 shows the activity diagram of current system. Figure 3.2 until figure 3.5 shows the sequence diagrams of current system. Figure 3.1: Activity diagram of current system

25 22 R User : Specialist enqineer 1. Search data manually \ / Figure 3.2: Delete data User : Specialist enqineer 1. Enter data 2. Click save button \ 7 3. Send save command!!! 1 j j Figure 3.3: Add data

26 X User : Swcialist :Panel i :Excel i 1 ' 1. Search data manually \ / 1 enaineer 1,sheet, Figure 3.: Search data A User : S~ecialist 1 enaineer 1. Send reminder to user's 2. Get data from account > : - - -r.! Figure 3.5: Send reminder As stated in Chapter, there are a few problems with current system. The auto trigger system is not able to retrieve data from different excel worksheet. Therefore, the data need to be entered in one excel worksheet. This means that data which are different sections or different fields also need to be keyed in the same excel worksheet. The current system is only able to send reminder to user's account. t does not provide function such as trace data by serial number. With this condition, the users are not able to search data in a short time as all data are located in one excel worksheet. Another problem with current system is using Microsoft Excel as database. n the excel worksheet, there is a button named Refresh which used to calculate remaining

27 days Remaining days stands for current date minus expired date. When user click on the button, each row will be executed and get the latest remaining days. When it executes, it start from top to bottom. But with condition there is not a blank row in between data. f there is a blank row in between the data, the data after the blank row will not able to get the latest days. Further more, the excel worksheet will get an error message as the command sets in itself not able to execute properly. n addition, the excel worksheet is placed in a sharing drive. t means that everyone also can view the data, modify the data or delete data. Hence, excel is not suitable to use as database. 3.3 Requirement analysis 33.1 Data Requirement This is about data which need in this system and it will be used in the database. Below shows the required data: User = User D + User Password +Level access Hardware = tem-hardware + FTR-model+ nstrument - D Software = tem-software + lube-software + ms - office + OMNC + OS Standard disk = Lubetype + Levelstddisk + Locationstddisk Supplier = Supplier name nventory = Product~serial~no+Product+Description+Category+ Suppliername+ Datequrchase+ Date-expired+ Auditor+ Auditordate+ Level+ Lube-type+ Slope+ Location+ nstrument