Preparing Overview Activity Diagrams

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Matakuliah : F0712 / Lab MS Access

Tahun : 2007

Perancangan Pencatatan Transaksi

Flowchart dan Activity Diagram

Pertemuan 19 s.d 20

Basic Rules of Flowcharting - I

• 1) The flow begins at the upper left-hand corner of the sheet and generally moves from left to right and from top to bottom

• 2) All steps are clearly presented in a sequence, or a series of sequences. No obvious gaps in the procedure should be present

• 3) Symbols are used consistently throughout. Thus the symbol for manual processing (an inverted trapezoid) should appear each time a clerk performs a step in the procedure

• Examples: What is what?

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Figure 2-9

Basic Rules of Flowcharting - II

• 4) The dispositions of all documents and reports are shown. In fact, the final “resting place” of every copy of every of every prepared document should be specified. Typical dispositions include placing documents in files, sending documents to outside parties such as customers, forwarding documents to connecting procedures (such as a general ledger procedure), and distributing reports to managers. If the disposition consists of destroying a document, this action may be represented in the manner shown below:

From prior processing

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Figure 2-9 - continued

Source Document Destroy

Basic Rules of Flowcharting - III

• 5) The “sandwich” rule is consistently applied. This rule states that a processing symbol should be sandwiched between an input symbol and an output symbol, in the manner shown below:

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Figure 2-9 - continued

Input document

Manual

Process

Output document

Basic Rules of Flowcharting - IV

• 6) When a document crosses an organizational line within the flowchart, the document is pictured again in the new organizational unit. However, the repetition is not usually necessary in some instances if the organizational units are adjacent

• 7) All symbols contain a brief but specific label written inside the symbols

• 8) Multiple copies of documents are drawn as an overlapping group and are numbered in the upper right-hand corners; these numbers remain the copies during their flows through the procedure

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Figure 2-9 - continued

Basic Rules of Flowcharting - V

• 9) Added comments are included within annotation symbols and are attached to appropriate symbols, such as the processing symbols to which the comments are related

• 10) Ample connections (cross-references) are provided. The symbols used in forming the connections depend on the situation.

Thus, if two sheets are needed to to contain the flowchart, the flows between pages are formed by off-page connector symbols. In those cases where the procedure being flowcharted links to an adjoining procedure, the connection can be formed by a terminal symbol

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Figure 2-9 - continued

Basic Rules of Flowcharting - VI

• 11) Exceptional Occurrences, such as back orders, are clearly noted.

They may appear as (i) comments within annotation symbols, (ii) separate flowcharts, with references to the main flowchart, or (iii) decision branches, as shown below:

From prior processing

Customer

Credit

Satisfactory?

Reject

Order

Accept

Order

Rejection

Letter

To Customer

Acknowledgement

To Customer

Sales Order

To sales Order

Processing

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Figure 2-9 - continued

Contoh Penggambaran Flowchart

Sebuah perusahaan dagang sedang merancang suatu Sistem Informasi

Pembelian Barang. Bagian – bagian yang terlibat adalah Bagian

Gudang dan Bagian Pembelian. Sistem tersebut melalui tahap – tahap tertentu yang saling berhubungan.

Diasumsikan sistem tersebut telah memiliki file master pemasok dan file master persediaan .

Buatlah flowchart setiap tahap tersebut, kemudian gabungkan setiap tahap hingga membentuk flowchart secara keseluruhan.

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Contoh Penggambaran Flowchart

Sistem informasi pembelian dimulai oleh Bagian Gudang yang memberikan Surat Permintaan

Pembelian (SPP) ke Bagian

Pembelian. Bagian Pembelian setelah menerima dokumen SPP kemudian memasukkan data pembelian ke komputer secara manual. Setelah menginput, dokumen SPP diarsipkan (simpan secara manual) berdasarkan nomor

SPP.

User Bagian Pembelian

SPP

Input data pembelian

N

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Contoh Penggambaran Flowchart

Atas input yang dilakukan oleh Bagian Pembelian, sistem tersebut secara otomatis membuat record pembelian dalam file pesanan pembelian sementara yang mengacu pada file master pemasok dan file master persediaan .

Record tersebut disimpan dalam file transaksi pesanan pembelian.

User Bagian

Pembelian

File Mater Pemasok

Buat record pembelian

(otomatis)

SPP

Input data pembelian

File Mater

Persediaan

N

File Pesanan

(sementara)

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Contoh Penggambaran Flowchart

Pada akhir hari sistem akan mencetak dokumen Surat

Pesanan Barang (SPB) sebanyak 5 rangkap berdasarkan File Pesanan (sementara) tersebut.

Kelima rangkap tersebut akan diperiksa berdasarkan SPP yang telah diarsip menurut nomor urut sebelum proses ini. Kelima rangkap tersebut

SPB akan diperiksa dan ditanda-tangani oleh manajer pembelian.

Gambar 

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Contoh Penggambaran Flowchart

User Bagian

Pembelian

SPP

Input data pembelian

N oleh manajer pembelian

Periksa dan ditanda-tangan

File Mater Pemasok

Buat record pembelian

(otomatis)

File Pesanan

(sementara)

Cetak Pesanan

Pembelian

1

2

3

4

5 pada akhir hari

File Mater

Persediaan

Contoh Penggambaran Flowchart

Selanjutnya SPB rangkap ke-1 diserahkan ke pemasok, rangkap ke-2 ke bagian penerimaan barang, rangkap ke-3 ke bagian hutang, rangkap ke-4 ke bagian gudang sebagai pihak yang meminta barang, sedangkan rangkap ke-

5 diarsipkan berdasarkan nomor urutnya.

Gambar 

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Contoh Penggambaran Flowchart

User Bagian Pembelian

SPP

Input data pembelian

N oleh manajer pembelian

Periksa dan ditanda-tangan

Buat record pembelian

(otomatis)

File Pesanan

(sementara)

Cetak Pesanan

Pembelian

1

2

3

4

5

File Mater Pemasok

File Mater Persediaan pada akhir hari

1

2

3

4

5 N

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Pemasok Bagian Penerima

Barang

Bagian Hutang Bagian Penerima

Barang

Contoh Penggambaran Flowchart

Selanjutnya SPB rangkap ke-1 diserahkan ke pemasok, rangkap ke-2 ke bagian penerimaan barang, rangkap ke-3 ke bagian hutang, rangkap ke-4 ke bagian gudang sebagai pihak yang meminta barang, sedangkan rangkap ke-

5 diarsipkan berdasarkan nomor urutnya.

Gambar 

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User Bagian

Pembelian

Contoh Penggambaran Flowchart

File Mater Pemasok

SPP

Buat record pembelian

(otomatis)

Input data pembelian

File Mater

Persediaan

File Pesanan

(sementara)

N pada akhir hari oleh manajer pembelian

Periksa dan ditanda-tangan

Cetak Pesanan

Pembelian

1

2

3

4

5

1

2

3

4

5 N

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Pemasok Bagian Penerima

Barang

Bagian Hutang Bagian Penerima

Barang

The UML Activity Diagram

• A “map” for understanding business processes

• Shows the sequence of activities in the process

• Two types of activity diagrams:

– Overview

– Detailed

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Two Types of Activity Diagrams

• Overview diagram

– Presents a high-level view of the business process

– Documents the key events, the sequence of these events, and the information flows among these events

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Two Types of Activity Diagrams

• Detailed diagram

– Provides a more detailed representation of the activities associated with one or two events shown on the overview diagram

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Understanding Overview Activity Diagrams

Reading an overview activity diagram

Swimlanes

– represent agents outside the organization and the computer system used to record and process AIS data.

Solid circle

- represents the start of the process.

It appears in the swimlane of the agent (inside or outside the organization) who initiates the process.

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Understanding Overview Activity Diagrams

Reading an overview activity diagram

Rounded rectangles

– indicate events. (Some events were triggered by other events earlier in the business process rather than by agents outside the organization No additional rounded rectangle was needed to represent this trigger.)

Continuous lines with arrows

- show the sequence of events.

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Understanding Overview Activity Diagrams

Reading an overview activity diagram

Document symbol

- represents source documents and reports.

Capital letter(s) followed by a colon before the name of the document

- represents reference to a typical document created during the process. (Indicate the status of the object below its name.)

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Understanding Overview Activity Diagrams

Reading an overview activity diagram

Dotted lines with arrows - represent the flow of information between events.

Dotted lines - connect events and tables to show how table data are created or used by events. For example, the dotted line to the Sale table represents the sale being recorded.

Bull’s-eye - represents the end of the process.

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Preparing Overview Activity Diagrams

Preliminary Steps:

Step 1: Read the narrative and identify key events.

Step 2: Annotate the narrative to clearly show event boundaries and event names.

Preparing Overview Activity Diagrams

Guidelines on naming events: a. Use broad names that reflect the purpose of the event . b. Avoid names that focus on detailed steps in the event.

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Preparing Overview Activity Diagrams

Guidelines on naming events: c. Be specific. Avoid names such as “Process information.” Information is a general word and does not convey much content to your reader. Use more precise event names.

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Preparing Overview Activity Diagrams

Guidelines on naming events: d. Start event names with a verb. e. Do not include employee or department names in event names.

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Preparing Overview Activity Diagrams

Steps for Preparing the Activity Diagram:

Step 3: Represent agents participating in the business process using swimlanes.

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Preparing Overview Activity Diagrams

Guidelines for representing people or devices: a. Create a swimlane for each person or department responsible for various events in the narrative.

b. Create a swimlane for entities outside the organization that initiate events in the process.

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Preparing Overview Activity Diagrams

Guidelines for representing people or devices: c. Create a swimlane for the computer system. d. Write the name of the appropriate person or department in the swimlane.

Preparing Overview Activity Diagrams

Common errors in representing people or devices:

• Computer systems should be represented as a swimlane since the computer can perform actions.

• Documents, files, ledgers, and binders cannot perform any activity. Do not set up swimlanes for such objects.

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Preparing Overview Activity Diagrams

Steps for Preparing the Activity Diagram:

Step 4: Diagram each event. Show the sequence of these events.

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Preparing Overview Activity Diagrams

Guidelines for documenting events and the sequence of events: a. Draw a solid circle to represent the start of the process. The solid circle is shown in the swimlane for the agent (inside or outside the organization) who initiates the process.

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Preparing Overview Activity Diagrams

Guidelines for documenting events and the sequence of events:

Start with the first event.

b. If the event is triggered by an agent outside the organization, show a rounded rectangle for the trigger.

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Preparing Overview Activity Diagrams

Guidelines for documenting events and the sequence of events: c. Set up a rounded rectangle for the event in the swimlane of the person or department within the organization who is responsible for the event.

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Preparing Overview Activity Diagrams

Guidelines for documenting events and the sequence of events: d. If the event is triggered by an agent outside the organization, connect the trigger (see

Step b) to the event with a continuous line.

e. Otherwise, connect the previous event to the current event with a continuous line.

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Preparing Overview Activity Diagrams

Guidelines for documenting events and the sequence of events:

Repeat Steps b through e for each subsequent event.

f. Draw a bull’s-eye to represent the end of the process. Set up the bull’s-eye in the swimlane for the agent performing the last event. Connect the last event to the bull’s-eye with a continuous line.

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Preparing Overview Activity Diagrams

Common errors in documenting events and sequences of events: a. All the events identified in Steps 1 and 2 are not shown on the activity diagram.

b. Additional events not identified in Steps 1 and

2 are shown on the activity diagram.

c. Continuous lines connecting events are not shown.

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Preparing Overview Activity Diagrams

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Common errors in documenting events and sequences of events: d. Events are labeled with agent names. Agent names should not be included in event names since agent names are represented in swimlanes.

e. Event names are not consistent with the names identified in Step 2.

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Preparing Overview Activity Diagrams

Steps for Preparing the Activity Diagram:

Step 5: Draw documents created and used in the business process. Show the flow of information from events to documents and vice versa.

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Preparing Overview Activity Diagrams

Guidelines for representing documents and document flows: a. Draw a document symbol below the event that creates or modifies a document.

Preparing Overview Activity Diagrams

Guidelines for representing documents and document flows: b. Draw dotted lines to connect events and documents:

– Draw a flow from an event to a document to show that a document is being prepared or modified by the event.

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Preparing Overview Activity Diagrams

Guidelines for representing documents and document flows: b. Draw dotted lines to connect events and documents:

– Draw a dotted line from a document to an event to show that information on a document is being reviewed or used by the event or activity.

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Preparing Overview Activity Diagrams

Guidelines for representing documents and document flows: b. Draw dotted lines to connect events and documents:

– If a document appears multiple times in the process, add status information showing how the object changes during the process.

There’s usually no need to show a document symbol again unless it’s modified or updated.

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Preparing Overview Activity Diagrams

Guidelines for representing documents and document flows: c. Note that we focus on events that use, create, or modify documents. We do not show the physical transfer of objects.

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Preparing Overview Activity Diagrams

Common errors in representing documents and document flows: a. Verbs are mistakenly used in naming documents. The dotted lines represent information flows. Do not need verbs in the document names.

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Preparing Overview Activity Diagrams

Common errors in representing documents and document flows: b. Documents are not connected to events.

Make sure all important flows are shown.

One of the major benefits of an activity diagram is that it helps you understand the flow of information in an AIS, which is very important in analyzing internal control.

Preparing Overview Activity Diagrams

Steps for Preparing the Activity Diagram:

Step 6: Draw tables (files) created and used in the business process. Show the flow of information from events to tables and vice versa.

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Preparing Overview Activity Diagrams

Guidelines for representing tables and flow of information to and from tables: a. Show computer tables in the Computer column. Only the computer system can read or write information from or to these tables.

b. Draw a flow from a table to an event to represent the fact that information in a table is being reviewed or used by the event.

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Preparing Overview Activity Diagrams

Guidelines for representing tables and flow of information to and from tables: c. Draw a flow from an event to a table to show that a record is being created or updated by the event or activity. d. Include status information to show how the object changes during the business process.

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Preparing Overview Activity Diagrams

Common errors in representing tables and flow of information to and from tables: a. Tables are named with verbs. Use nouns to label tables.

b. Table attributes are listed instead of table names. Table names are a more compact way of representing tables on activity diagrams.

Labeling individual attributes makes the diagram harder to understand.

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Preparing Overview Activity Diagrams

Common errors in representing tables and flow of information to and from tables: c. All flows between events and tables are not shown. As with documents, flow of information to and from tables is important in understanding accounting systems and controls. Include all important flows

.

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Understanding Detailed Activity Diagrams

• The symbols used in the detailed and overview diagrams are the same.

• The major difference - rounded rectangles in the detailed diagrams represent activities, not events.

Understanding Detailed Activity Diagrams

• Two additional symbols in detailed diagrams:

– a branch (diamond) symbol - a point where processing splits into two or more paths.

– a UML note symbol - enables reference to more detailed information available in another diagram or document.

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Preparing Detailed Activity Diagrams

Step 1: Annotate narrative to show activities.

Highlight the verbs in the narrative that represent activities.

Step 2: Prepare a workflow table. Set up a table using a two-column format. Identify the business events with which the activities are associated.

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Preparing Detailed Activity Diagrams

Step 3: Identify necessary detailed diagrams.

• Construct a separate detailed diagram for each event in the business process

Or

• Include more than one event in the detailed diagram.

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Preparing Detailed Activity Diagrams

Step 4: For each detailed diagram, perform the following substeps:

4a. Set up swimlanes for the agents participating in the event or events represented in the detailed diagram.

4b. Add a rounded rectangle for each activity in the event(s) being documented in that detailed diagram.

4c. Use continuous lines to show the sequence of the

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Preparing Detailed Activity Diagrams

Step 4: For each detailed diagram, perform the following substeps:

4d. Set up any documents created or used by the activities in that diagram.

4e. Use dotted lines to connect activities and documents.

4f. Document any tables created, modified, or used by the activities in the diagram in the computer column.

4g. Use dotted lines to connect activities and tables.

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