WAREHOUSE MANAGEMENT INFORMATION SYSTEM USING ECONOMIC ORDER QUANTITY IN CV CIHANJUANG CORE ENGINEERING

1 2 Lutfi Waziirul Fazri , Tati Harihayati Mardzuki

1.2 Information Engineering - University Computer Jl. Dipatiukur No. 112-114 Bandung 1 2 E-mail: [email protected] , [email protected]

ABSTRACT bajigur. Viriasi and bajigur including bandrek , tea en bandrek, bandrek chocolate, CV Cihanjuang Core Engineering is a drink specials, and coffee bajigur. company engaged in the field of traditional food and The results of the interview with Ms. Sapuroh as beverage. One product of CV Cihanjuang core the Head of Warehouse CV Cihanjuang Core technique is a traditional drink that is typical of West Engineering, stated that the warehouse had difficulty Java and bajigur bandrek Cihanjuang Road, Cimahi, in determining the number of bookings or purchases Bandung, . CV Cihanjuang Core of raw materials is optimal because the process is Mechanical problems found in warehouse now carried out to determine the number of orders management so that there is a vacuum supply of raw based solely on intuition alone so Sapuroh not know materials and happen reservations over the limit the number of bookings Must be fulfilled. It is specified date. Therefore we need an information influenced as yet it determines the maximum limit management system of warehousing can help the for each product. So the head of the warehouse do head of the warehouse in CV Cihanjuang Core not know whether the number of orders placed was Techniques in determining the number of bookings nearing the maximum limit as necessary or not. The optimal and assist in determining when it is maximum limit in question is the extent to which appropriate to melakukaan orders to suppliers in stock the warehouse must be met (maximum order to avoid gaps supplies and can meet the inventory). Maximum inventory of raw materials maximum limit supplies , By using the method of and products is very important to implement, analysis ABC / the analysis of Pareto grouping data, Besides the head of the warehouse had difficulty the method Economic Order Quantity (EOQ) is used in deciding when to book back to the supplier of raw to determine the optimal number of bookings related materials because during this time the reservation is to the Maximum Inventory and Reorder Point made when the supply of raw materials has been method (ROP) is used to determine the return exhausted, it is caused yet-determined point booking. So that the information systems in the determination ordering raw materials back to the wake can complete permasalahhan CV Cihanjuang supplier by the company. It also resulted in the inventory management at Core Engineering booking time is erratic and often occur outside the schedule time of reservation, while the company determined that the time of reservation should only

Keywords: Warehousing, Information Systems be done in the range of 1 to 15 each month Warehouse Management, ABC Based on the background of the problems Analysis, Economic Order described, it is a problem that occurs in CV Quantity (EOQ), Reorder Point Cihanjuang Core Engineering, the formulation of the (ROP) problem underlying the preparation of this thesis are: 1. Helping head warehouse in CV Cihanjuang Core Techniques in determining the number of 1. INTRODUCTION bookings or purchases so there is no vacancy CV Cihanjuang Core Engineering is a company optimal raw material inventory. engaged in the traditional beverages or soft drinks 2. Helping head warehouse in CV Cihanjuang Core where CV. Cihanjuang Core Techniques (CinTek) Techniques in determining when time produce or make a traditional beverage from West Java or commonly called the archipelago drinks Bandrek, Bajigur, Skoteng, beas cikur and variations of bandrek and variations of the right to make a reservation back to the can be inhibited even at the risk can not be used [7]. supplier so as not overextending the specified date 2.3 Warehouse management Warehousing management goal is to optimize the 2. RESEARCH use of space in the warehouse, streamlining the work 2.1 Management information System of employees and equipment warehouse, providing Definition of a Management Information System access to the best inventory for the warehouse (MIS), according to some experts. According to employees, and ensure the effectiveness of the Joseph F.Kelly in his book "Computerized movement of inventory / goods in the warehouse [7]. Management Information System" defines SIM is a Warehousing management services provided within combination of human resources and computer- an operational or production activities, namely [7]: based resources and produce a collection of storage, a. Facilitate the movement of goods since communications, and the use of data for purposes of the arrival of the supplier until the efficient operations management and business delivery with transport leaving the planning. [1] .Drs. Soetodjo Moeljodihardjo in his company to the next process. book "Management Information System" defines b. Reduce transportation costs through the SIM is a method for generating accurate information process of break-bulk, consolidation, for management of the environment outside the cross docking. If the company serves organization and operations within the organization, many customers at distant locations, the the goal is to support the decision-making process as company could use to transport also well as improve the planning and supervision [2]. delivers to every consumer. To reduce SIM is basically `the process of communication in costs, the company can send the finished which the input information (input) are stored, and goods warehouse located close to all the processed to produce an output (output) in the form consumers that far. of a decision on the planning, operation, and c. Facilitate the efficient delivery of goods supervision [2]. SIM is an information system that is to consumers, as well as providing used to present information that is used to support security for handling the inventory itself. the operation, management, and decision making in [7] an organization [3]. 2.4 Activities Warehouse 2.2 Warehousing Here are some of the activities of the warehouse Warehouse is a temporary storage area and that [7]: taking inventory for operations support for the next operation, to the distribution location or to the final 1. Receiving consumer. Warehouse sebagaiberikut function [7]: (Receiving Goods) activity consisting of the a. Store for a while and wait for their turn in the decline in goods from a delivery vehicle, process. the opening of the package material, b. Monitor the movement and status of goods examination of the suitability of the c. Minimizing the cost of movement of goods material with a list of shipment (packing d. Point of balancer flow of goods inventory and list), checks the quality of goods, decide the warehouse for inventory their advantage is to quality of the goods (accepted, rejected, or provide the place for put and protect accepted with the proviso), as well as (of rain), providing timely bespoke (guaranteeing handling of goods to be stored in the service level), monitor status, as a means of warehouse. The important factor to be communication with consumers and reduce considered in the process of receipt of transportation costs. If the forecast consumer goods which are: demand will increase dramatically in the period a. The number, size, shape, weight, physical ahead and the limited production capacity of 25, the nature, timing, and frequency. company can begin to increase production at some b. Equipment and facilities previous period and excess inventory or finished c. Person goods or raw materials temporarily placed in 2. Pult-away storage. It required knowledge of warehouse an activity the receipt of goods from the management. Although inventory sufficient, receiving location to the location where the but if without a good warehouse management placement of goods. This activity can be inventory movement to the next production process done manually by humans themselves or with the help of machines. 3. storage continue in terms of the production process (Storage) The purpose of storage of goods is continues to run, so we have to determine how much to ensure: the bare minimum inventory level that should be a. Sufficient capacity and efficiency of considered so as to avoid shortages. So in other space usage storage words, the decision when to order is generally b. Control of the quality and quantity of expressed in terms of a reorder point (reorder point material during storage (audit) ROP) inventory level where reservations must be c. Supply needs for user number made. The equation for the ROP assume that the d. Neatness and maintenance of premises demand for and lead time itself is stable. And if you and storage tool do not like it then required additional inventory that e. Safety of people and the environment can be called safety stock (safety stock). around the storage 4. picking 2.6 Ongoing Analysis System (Intake) These activities include the receipt 2.6.1 Procedures provision of Raw Materials and processing, locate the placement of goods, putting goods on in storage, taking goods ordered, checking the physical condition and quantity of goods, until the transfer of goods to the shipping department. 5. Shipping (Packing, Packaging) These activities include packing after being taken in the packing process, after which the goods are delivered to a transport vehicle, consolidation of shipments and goods - goods that would otherwise be sent to the destination), until the delivery documentation preparation activities. [8] Figure 1 Procedure Provision of Raw 2.5 Model Economic Order Quantity Materials EOQ model is a calculation model to obtain the optimal order quality value of a company. Assuming 2.6.2 Acceptance Procedure Raw Materials the value of the demand for a product, the cost of booking, the purchase price per unit is a constant value [8]. One model supplies the most widely used model is the economic order quantity (Economic Order Quantity). EOQ method strive toward minimum inventory levels, lower costs and better quality. Inventory planning EOQ method in a company will be able to reduce the occurrence of out of stock so it will not interfere in the production process within Figure 2 Raw Material Acceptance Procedures the company and be able to save costs in the company's raw material inventory. With the 2.6.3 Procedures for Removal of Raw Materials implementation of the EOQ method is expected to reduce storage costs, saving space, both warehouse and workspace, resolve the problems arising from the many supplies that accumulate thereby reducing the risk that can arise because of excessive inventory in storage or warehouse space. If EOQ models answered questions how many reservations were optimal, then the reorder point (ROP) answered the question when to start holding orders. Bida ROP occurs when the amount of inventory contained in the stock reduced

Figure 3 Expenditure Raw Materials traditional. Event raw material expenditure, ie 2.7 Inventory Management Analysis expenditure by consumer bookings Analysis of inventory management is an analysis In this analysis will be taken samples / examples of how the procedure - a procedure associated with prouk that will be the object for analysis, the product the supply of goods to be implemented on inventory most, middle and little in the purchase. Sample data management information system in CV Cihanjuang used is the product data in the period of 2017. Here Core Engineering. Here are SIM models in CV is the calculation determining the amount of sample Cihanjuang inventory Core Techniques are can be seen in equation (3.2): described in Figure 4 n = N / (1 + Ne ^ 2) n = 65 / (1 + 65 (0.1) ^ 2) n = 39,4≈39 product

Finished goods taken as samples 39 products produced from 10% of products amounted to as much as 65 products. The criteria for Figure 4 SIM Model Inventory the sampling of 39 products is the random sampling coated. Here is a random sampling calculation 1. Inventories Raw Material Requirements coated can be seen in equation (3.1): Sample (i) = Planning Population (i) / TotalPopulasi xTotalsampel We will Raw material inventory requirements planning is draw a sample of 39 products with the following an activity to determine the raw materials that will criteria: be purchased in the next period based on the level of Total expenditures ≥ 30 = 10 Total expenditure in the previous period. Thus requiring expenditures products ≥ 10 = 20 Total the grouping of items based on class top priority, of expenditure product ≤ 10 = 35 Total the goods. In determining the priority class of goods goods wholly product = 65 product can use the ABC analysis method. After knowing Samples of total expenditure ≥ 30 = 10/65 x 39 = 6.0 ≈ the grade of each item, then performed perencaanaan 6 to determine the amount of raw material ordering Samples of total expenditure ≥ 10 = 20/65 x 39 = 12 optimized by using EOQ, reorder point items or that ≈ 12 samples total expenditure ≤ 10 = 35/65 x 39 = we are familiar with Reorder Point (ROP) and 21≈ 21 The products being used as a sample to supplies a maximum (maximum inventory) that must determine the class of each item can be seen in Table be met. 1

2. Purchase of Raw Materials Event raw material purchases made after Table 1 Sample knowing the class of goods to determine the goods Product that need special attention to be done as soon as possible with the purchase of a predetermined No. ITEM TYPE STOC UNIT number of bookings in the planning of goods. K 1 Beas cikur 9440 pcs 3. Acceptance of Raw Materials GR bag (8x5) Activities for the match / check (physical state of 30 gr the goods, according to the request type and quantity 2 Beas cikur 1480 pcs of goods). Bag (8x5) 30 After procuring raw materials further raw gr material storage activity that is the process of 3 Bandrek bag 40 KW moving raw materials that have been received GR () transferred to the warehouse, then by type. Further 4 Bandrek Bags 8120 pcs activities to be used as raw material expenditure (8x5) 31 gr traditional food and beverage machines that begins 5 Bandrek Renteng 29 240 sachet with the demand for raw materials in the warehouse, (12x10) 25 gr then the warehouse will release the goods upon 6 bajigur Bag 43 520 pcs request of the production. Raw materials that have (8x5) 25 gr been issued by the warehouse received in the 7 bajigur Plastic 11240 pcs production kemudiaan be making food and beverage (8x5) 25 gr 8 bajigur Premium 5280 sachet (12x10) 27 gr 9 Bandrek 1560 sachet Arro w Arjuna (8x1) 31 gr 10 Black Tea Latte 3320 pcs 32 Packages By - By 7320 pcs Bag (8x5) 24 gr 9 Taste Bags (9x5)

11 Chocolate Bandrek 3120 pcs 33 Sakoteng Bags 9840 pcs Bag (8x5) 25 GR (8x5) 30 gr gr 34 Sakoteng Bags 28 680 pcs 12 Chocolate Bandrek 240 pcs (8x5) 30 gr Plastics (8x5) 25 gr 35 Sakoteng Plastic 16080 pcs 13 Chocolate Bandrek 6240 pcs (8x5) 30 gr renteng (12x10) 36 Bandrek Special 18 768 pcs 25 gr GR bag (8x5) 14 creamer 1760 sachet 31 gr repacking 37 Bandrek Special 22 160 pcs 15 Bandrek Iced Tea 4760 pcs Bag (8x5) 31 gr Bags (8x5) 25 gr 38 Bandrek Special 4800 pcs 16 Ice Tea Bandrek 1040 pcs Plastics (8x5) 31 gr Plastics (8x5) 25 gr 39 Sari Lemongrass & 14400 sachet 17 Sugar White 5400 pcs Ginger Repacking 8 gr (12x10) 20 gr 18 Green Tea Bags 80 Box Hanjuang The procurement process begins with the purchase 19 Green Tea Latte 1480 pcs of planning activities which determine the class of Bags (8x5) 25 goods based on expenditures by using ABC analysis. gr The steps in determining grade goods with ABC 20 Green Tea Latte 3270 sachet analysis is as follows: Renceng (8x5) 25 1. Calculating the amount of expenditure per year gr for each unit of the product. 21 Green Tea + Sugar 2800 sachet 2. Make a list price of each product. Renceng 3. Multiplying the number of dispensing with the 22 Coffee Bandrek 2360 pcs price to get the value of the investment can be Bag (8x5) 31 gr seen in the investment field. 4. Sort the investment value from largest to 22 Coffee Bandrek 240 pcs smallest. Plastics (8x5) 31 gr 5. Calculating the value of the cumulative 23 Coffee bajigur 4040 pcs investment can be seen in the cumulative Bag (8x5) 31 gr investment column. 6. Calculating the percentage of cumulative investment value. 24 Coffee bajigur 320 pcs Plasik (8x5) 31 gr 7. Classifying the goods based on the percentage of the cumulative value of the investment can be 25 Coffee 18 Pack seen in the class column. Powde 8. If the value of the cumulative frequency from 0 r Priangan (1x200) to 80% then it is classified as A. If the range gr between 80-95% will be classified as B, and 26 Coffee Powder 32 680 pcs when the range between 95-100% will be Priangan Renceng classified as C. 30 g

27 Coffee + 657 sachet 2.8 Functional Needs Analysis Sugar Analysis of functional requirements is an Priangan Bags analysis of the functional needs of both the flow of (12x15) 25 gr data and information. Functional analysis described 28 Coffee + 640 sachet in a structured analysis that will be discussed as Sugar follows Priangan Renceng (12x15) 25 gr 2.8.1 Analysis Database 29 Hanjuang Pack 12 360 pcs Plastic flavor Analysis of the data base on warehouse management information system using Entity 30 Hanjuang Package 12689 pcs Relationship Diagram (ERD). ERD designed can be 9 seen in Figure 5 Rasa Box (9x1) 264 gr 31 Hanjuang Package 13840 pcs 9 Plastic flavor

DataLogin Data Log Login Info Info Login 1 Data Login Login Data Login Login Info Login Info Data Lost Password Data Lost Password Info Forgotten Password Info Forgotten Password

Admin director Data Log Data login

2 Data Lost Password Dinformation Info forgotten Forgot Forget ata passwords magnifyingPasswo glassa the Passwodrd Warehouse password Head of operator Warehouse User Data user Data Data Forgot Password Forgot Password mail Server User Info

Data Submission Purchase Data Submission purchase of goods Submission Info Purchase 3 Submission Info Purchase of Goods Peengajuan Inventory Purchase of Data Submission Goods User Data

Filing Goods Purchases User Data Data Submission Data Goods

DataGoods Inventory Goods DataGoods Supplier 4 Data Item Info DataSupplier Info Supplier Management Masu Goods Data Supplier Data Supplier Goods Data Log Master Data Info items Log User Data Goods Data Log Incoming goods User Info

Goods ordering data Data Product Order Product Order Info 6 Info PemesananBarang Ordering goods Report Bookings Booking Report Data Goods Data Log Incoming goods Booking Report Data Goods Data Log Booking Report Data

Data Reports Data Item Info Goods Reports 6 Info booking report Report Item Report Booking Report Data Info Booking Reports

Reports Data Item Goods reports

Figure 7 DFD Level 1 Figure 5 Analysis Database 2.9 Relation scheme 2.8.2 diagram Context Describes the relation scheme related data Context diagram is a diagram of the highest between multiple data and limits. The scheme level of DFD (Data Flow Diagram) describes the described can be seen in Figure 8 input and output of a system and its relationships in the system. Diagram context is often referred to as Level 0 DFD context diagram warehouse management information system in CV Cihanjuang core technique can be seen in Figure 6

Data Log Inventory Data items in the newly added data items if any data items in the edit Incoming goods data New incoming goods data if there is data items out Data supplier New supplier data if there is Warehouse Supplier data that is added if there is a operator supplier of data to be edited Data Request for Purchase Data requests new purchases if there is The purchase request data that is added Data Log Purchase request data to be edited Data Request

Data PO HEAD OF Data PO plus PO data to be edited WAREHOUSE

Login Info Info items Info Info items plus new items if there are items in the edit info Info incoming goods Info new incoming goods if the Figure 8 Relation Scheme goods exit Info Info supplier Info new supplier if there is Info suppliers plus if there are Login Info suppliers in the edit info INFORMATION Info Request Info Purchase Request Info SYSTEMS PO Info demand for new purchases if there Info WAREHOUSE Info plus Info PO PO edited The purchase request that plus the purchase MANAGEMENT 2.10 Admin Menu Structure Design request information to be edited Login Info User Info User Info edited Data Log The user info plus Admin menu structure in CV Cihanjuang Core Data Monthly Techniques are the menus that exist at the time of

Login Info entry into the warehouse management information Info Monthly Report system. Here can be seen in Figure 9 Data Log

User Data director Admin Data Users in the edit user data that is added Figure 6 Diagram Context Login

2.8.3 DFD Level 1 Forgot the DFD Level 1 warehouse management password information system in CV Cihanjuang Core veranda Engineering describes the general process of what can be done on the warehousing management information system. DFD Level 1 can be seen in

Figure 7 System Change Password

management logout users

Figure 9 Admin Menu Structure Design Operator Interface Figure 12 Warehouse 2.11 Menu Structure Design Head WarehouseThe menu structure of the head warehouse in CV 2.11 testing Systems Cihanjuang Core Techniques are the menus that Testing the system aims to find errors or exist at the time of entry into the warehouse deficiencies in the software being tested. Tests management information system. Here can be seen conducted to determine the system to be built in whether it is feasible to use it or not. Tests Figure 10 performed include yard work Admin, Operator Warehouse, Warehouse Chief, and Director of using Login a testing strategy blacbox

Forgot the password 2.12 conclusion UAT Based on the results of user acceptance testing veranda end user acceptance test has been done by the warehouse operator to the management information system of warehousing CV Cihanjuang core

technique, it can be concluded that all processes are Master Data Transaction Change Password running and the system has been accepted by users in CV Cihanjuang Core Techniques such as admin, head warehouse , warehouse operators, and

Data Request Data PO (Purchase directors. Then the system can proceed to the next logout order) stage Figure 10 Menu Structure Design Head Warehouse 2.13 Beta testing

2.12 interface The design interface is made to describe the Beta testing is testing conducted objectively look of the program that will be used by the user to where tested directly into the field, a company interact with the system to be built. The design is related to the user's satisfaction with the content of based on the interface display both input and output the points is the fulfillment of the original purpose of to be generated when the application is implemented the development of management information 1. Login Interface Design systems warehousing CV Cihanjuang Core Techniques and interface of the management information system of warehousing CV Cihanjuang Core such techniques. Researchers perform data retrieval using interview techniques. From the results of these interviews it can be concluded whether the software has been built in accordance with the purpose or not. Interviews were conducted in accordance with the user in the system, namely the interview to the admin, warehouse operators, warehouse chief, and director. The test is performed on a CV Cihanjuang Core Techniques in order to determine the extent to Figure 11 Interface Login which the system is built to be a solution and solving problems previously described information

2. Warehouse Operator Interface 3. COVER 3.1 Conclusion Based on test results obtained from studies conducted in the preparation of this thesis as well as referring to the purpose of the study that has been created, it can be concluded that: 1. Inventory management information system that is built has been able to assist the head of the warehouse in CV Cihanjuang Core Techniques in determining the number of bookings or purchases optimal. 2. Inventory management information system that is built has been able to assist the head of the warehouse in CV Cihanjuang Core Techniques in determining when it is appropriate to make a reservation back to the supplier.

3.2 Suggestion Based on the results that have been achieved in building the system InformasiManajemen Pegudangan CV Inti Cihanjuang This technique still has shortcomings, therefore it is advisable to add things that can complement the future that is necessary the further development of this management information system implementation, especially in terms back-up automatically show the overall report for the data, and print reports, so as to reduce the possibility of undesirable things such as data loss due to damage to the computer and so lain.sebagainya

BIBLIOGRAPHY

[1] D. S. Moeljodihardjo, Management Information System. [2] P. Atmosudirdjo, System Information Management, Jakarta: STIA-Institute, 2005. [3] Kelly, Joseph F, Computerized Management Information System 2008. [4] J. W, Warehouse Management, Jakarta: Sinar Harapan 2009. [5] SMDHC Purnama, Management Information Systems, Mojokerto: Global Insan, 2016. [6] A. Ristono, Inventory Management. First Edition, Yogyakarta: Graha Science. [7] T. Wahyuni, use of ABC analysis for Inventory Control Consumables, Case Studies Vocational Program UI: Vocational Indonesia, Vol 3, 2015. [8] IRDR E, Inventory Management, Jakarta: Grasindo, 2015. [9] DIES Soegoto, Entrepreneurship, Jakarta: PT Elex Media Komputindo 2009. [10] UD Widianti, "Development of Asset Information Systems at PT. Industri Telekomunikasi Indonesia (Persero) Web- based, "Journal of Scientific Computing and Informatics (KOMPUTA) pp. vol 1, No. 2, pp. 57-62, 2012.