IB Computer Science Topic 1.1.4 Comparing System Implementation Approaches Revision Notes (SL/HL)

IB Computer Science Topic 1.1.4 Comparing System Implementation Approaches Revision Notes (SL/HL) | RevisionDojo

Comparing System Implementation Approaches

When implementing a new system, there are two options: to host the program locally (resulting in an on-premises system) or remotely (SaaS/cloud).

Definition

On-Premise system

A system that is installed and run on a client's local hardware

Definition

Remote hosting

Software hosted on external servers, accessed via the internet. Also referred to as cloud and SaaS (Software as a Service)

Note

SaaS is often referred to as "on-demand software" because users can access it whenever needed, without installing it locally.

Advantages and disadvantages of SaaS

SaaS has several advantages:

Lower Initial Costs:
1. No need for expensive hardware or infrastructure.
Scalability:
1. Easily adjust resources based on demand.
2. Supports a wide range of devices, including mobile.
3. Access from anywhere with an internet connection.
4. The device does not significantly influence performance.
Automatic Updates:
1. Easier to handle software updates and security patches.
Reliability:

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Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Comparing System Implementation Approaches

When implementing a new system, there are two options: to host the program locally (resulting in an on-premises system) or remotely (SaaS/cloud).

Definition

On-Premise system

A system that is installed and run on a client's local hardware

Definition

Remote hosting

Software hosted on external servers, accessed via the internet. Also referred to as cloud and SaaS (Software as a Service)

Note

SaaS is often referred to as "on-demand software" because users can access it whenever needed, without installing it locally.

Advantages and disadvantages of SaaS

SaaS has several advantages:

Lower Initial Costs:
1. No need for expensive hardware or infrastructure.
Scalability:
1. Easily adjust resources based on demand.
2. Supports a wide range of devices, including mobile.
3. Access from anywhere with an internet connection.
4. The device does not significantly influence performance.
Automatic Updates:
1. Easier to handle software updates and security patches.
Reliability:

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

1. System fundamentals2 subtopics

2. Computer organization1 subtopic

3. Networks1 subtopic

4. Computational thinking, problem-solving and programming3 subtopics

5. Abstract data structures (HL)1 subtopic

6. Resource management (HL)1 subtopic

7. Control (HL)1 subtopic

A. Databases4 subtopics

B. Modelling and simulation4 subtopics

C. Web science6 subtopics

D. Object-oriented programming (OOP)4 subtopics

IB Computer Science 1.1.4 Comparing System Implementation Approaches Notes

1. System fundamentals2 subtopics

2. Computer organization1 subtopic

3. Networks1 subtopic

4. Computational thinking, problem-solving and programming3 subtopics

5. Abstract data structures (HL)1 subtopic

6. Resource management (HL)1 subtopic

7. Control (HL)1 subtopic

A. Databases4 subtopics

B. Modelling and simulation4 subtopics

C. Web science6 subtopics

D. Object-oriented programming (OOP)4 subtopics

Comparing System Implementation Approaches

Advantages and disadvantages of SaaS

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Comparing System Implementation Approaches

Advantages and disadvantages of SaaS

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account