FILE MANAGEMENT ASSESSMENT

Hard Disk Drive VS Solid State Drive

HDD: cheaper, slower, fragile. SSD: expensive, faster, durable (uses flash memory)

RAM VS ROM

RAM: Primary, volatile, faster (lost if power goes off) ROM: Secondary, non volatile, slower (stored if power goes off)

Components of Info system

People processes data technology

Linear thinking vs systems thinking

Linear thinking: simple cause and effect. Systems thinking: interconnected ripple effect

Reasons Target Canada failed

Speeding up stores led to held inventory = bad data = bad predictions = out of stock = less revenue

Feedback loops (name the two loops)

Reinforcing = amplifying Balancing = stabilizing

Types of automation

Business automation: assembly line → mass production. Automation of lowering costs, reducing error. Robotic automation: robots being introduced to increase efficiency.

Strategic alignment

The fit btwn IT, BUSN, strategy + org and IT infrastructure, basically tech and BUSN working together

Business strategy and IS strategy

BUSN strategy = what company wants to achieve IS Strategy = how tech helps company

Why does state of the art tech fail? Name some businesses.

High prices/competition, social backlash, etc. Sony Betamax, 3D TVs

TPS Transaction Processing System

High volume operational transaction (Walmart self checkout)

MIS Management Information System

Storing data so it can be analyzed

DSS (Decision Support System)

combine info and analyze to make decisions

EIS Executive Information System

Presenting high level summaries + dashboards for execs

Sustaining systems Vs Strategic systems

Day to day Vs competitive advantage and long term

ERP Enterprise Resource Planning

allows all departments to be interconnected thru centralized system

CRM Customer Relationship Management

collects customer related data in a database

SCM

supply chain management

BI

BUSN intelligence allows us to create reports

Six steps for gathering data

Plan, Acquire, process, analyze, preserve, publish + share

What is CPU, where does it process data from? How does it do it?

CPU is the brain which interprets and executes program instructions. Using keyboard and trackpad as input, it retrieves data from memory (RAM) and stores on hard drive or SSDs

Infrastructure constraints: name all the layers of the system and what constraints may occur

Hardware, OS, application, network. CPU/RAM constraint: Month end may involve increased processing + active data. Storage constraint: the system may need to read or write large amounts of data. Network constraint: system/cloud based data takes longer to access. OS/application constraint: the relevant os layer may be handling workloads inefficiently

Walk through what to do when faced with a slow system

1. Identify symptom

2. Infrastructure constraint identification

3. Trade-offs (More RAM=more multitasking but bad for network problem. Network capacity increase = increased complexity and cost but helps shared data access.)

4. Match system purpose: TOS = investigate uptime and throughput. DSS/EIS, investigate storage and fast access to data.

5. Verify diagnosis

IPSO - Basic computer workflow

Input Processing Storage Output

Data life cycle

Capturing Storing Processing and Sharing data.

CPUs - Clock speed and physical cores.

Clock speed = determine CPU speed and therefore computer speed. Physical cores = independent physical processors on CPUz means computer can multitask.

Multi-threading

Computer with single core can run multiple processes at once aka multitask by setting up a timer to interrupt the system at a fixed interval and switch processes. A single interval is a time slices

Hyper threading

Simultaneous multi threading. Lets a single physical processor core run two independent threads of instruction at the same time. Each physical processor has two virtual cores called logical cores which are assigned to threads. So then the process is broken down and assigned to each thread

Cache vs ram vs secondary storage

Cache is fast but small, ram is larger and slower, secondary slower still

CPU Access sequence

Cache → Ram → cache replacement → secondary storage

Bit bytes

Bit holds 0 or 1, byte is 8 bits

Motherboard

CPU RAM input output devices and secondary storage all attach to motherboard

Name some OS

Windows MacOS Linux Unix

Remember to do the 2.9 chapter review

Okay