Week 4 - Documentation Techniques (Part 2) PDF

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Summary

AIS...

Description

System Flowcharts... -

Ginagamit kapag may mga automated processes dun sa process flow

• are used to represent the relationship between the key elements--input sources, programs, and output products--of computer systems • depict the type of media being used (paper, magnetic tape, magnetic disks, and terminals) • in practice, not much difference between document and system flowcharts

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pede irepresent sa mga source documents na hard copy yung files or any hard copy reports na kelangan in a certain process flow

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dito mahahighlight yung mga automated process which is done by the programs

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associated sa mga storage ng mga business information na may automation

- Same lang ng sales order system, but this have an automated processes and have some computer program

- the creation of the sales order documents reviews terminal input or output device symbol this one yung inanavigate ni certain personnel para makapag input sya ng information sa computer program - EDIT AND CREDIT PROCESS ex. May mga accounting system emplace si company, very common na automated na yung pagcecredit limit check natin kasi hindi iaaloow na magcreate ng sales order to a certain customer kapag yung credit limit nila or accounts receivable for this particular customer is already within the benchmark or yung na set na credit limit - after credit limit, you need to update the information

and somewhat related to the old model of ais na very relevant to flatfile model set up and initial model ng ais

Program flowchart – illustrate the logic use in program -

Use this documentation to illustrate certain logical process na ginagamit in some program

PFC – very common that there is a series of logical processes na kelangang mameet in iformation yung condition para continue yung pagpaprocess -

We use this documentation technique if we want to sum logical processes sa process flow natin

MODERN SYSTEM VERSUS LEGACY SYSTEM - MODERN SYSTEM – pedeng irelate with database model

- LEGACY SYSTEM- the flatfile model, very functions specific • Modern systems characteristics: • Client-server based and process transactions in real time -

Once we update some business functions automatic na updated na din yung mga data natin

• use relational database tables • have high degree of process integration and data sharing • some are mainframe based and use batch processing • Some firms employ legacy systems for certain aspectof their data processing. • Accountants need to understand legacy systems. • Legacy systems characteristics: -

Ang challenge dito ay since this one is using flatfile model, ang difficulty when using legacy system is yung pag-integrate ng mga information from various functions Outdated yung system

• mainframe-based applications • batch oriented • early legacy systems use flat files for data storage • later legacy systems use hierarchical and network database • data storage systems promote a single-user environment the discourages information integration

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Nagkakaroon ng common denominator with regards to the series of tables na ginagamit in a various business functions Para mas maprevent yung pagpaprocess ng duplicate information in the system and to make sure that there is a correct mapping from that transactional level hanggang sa financial reports, nagkakaroon ng audit trail of this structure

Database Backup Procedures • Destructive updates leave no backup. • To preserve adequate records, backup procedures must be implemented, as shown below: • The master file being updated is copied as a backup. • "A recovery program uses the backup to create a pre-update version of the master file.

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Very coomon na may mga companies or mga solutions in place na mga companies has disaster and recovery solution wherein for the case of fortuitous events na possible makadestroy ng work station or infrastructure of the company may mga usual na backup procedures na ginagawa para hindi totally maloss yung business information or mga records.

Computer-Based Accounting Systems • Two broad classes of systems: · batch systems – iniipon muna yung mga significant classes of transactions and we are going to process them for ex. Once a week. May ilang stand ng businesses na mas efficient yun for them kasi it helps them to monitor the controls down kapag sabay sabay nialng ipinaprocess · real-time systems – as the transaction occurs, we have that strategy na kelangan nating iprocess sya agad sa system. Nakalink na lahat ng accounts sa bawat business functions na meron ang company. Hindi yung kelangan pang magrefresh ng other business function para lang mareflect yung current balances or stocks. Automatic sa system integrated na sya lahat....