Xiaozhou Yu

you provide many suggestions for security control from managerial level, it is true the organization should have well designed security management plan.

encryption, strong authentication are good examples of security control, which can also applied in the employee training as well as the infrastructure design.

there are many cloud service provider in the market, they offer different functions, accessibility, and pricing.
i would suggest both microsoft azure and amazon web service. Try both and then figure out which on works best for the organization. i would require features and services for system customization, integrated storage, virtual network.…[Read more]

Usability issues for disabled people are not only in hardware but also in software. Ideas you mentioned about security setting provide a simple solution. Voice input method is used in many areas today and provide convenience for different type of users.

User experience is always a key issue for most of the organization that should keep improvement, no matter for normal users or disabled people. The problem is more severe for disabled people since have problem with this even on many easy functions that normal people won’t have problem with. How to improve the user experience and make most of…[Read more]

Color blind and general blind as well as deaf are common disabilities faced by many people. and make their life complex in terms of systems’ functionality and usability. Designers now invented different access to certain functions and increase the convenience for people with disability. For example, on pages contains paragraphs of texts, designers…[Read more]

The example you provided is well described, and gave us a clear view of the benefits of using different model and cross checking.

The explanation of each model is well described, So it is clear, they have different functionality, and should be use as combination for better system process representation.

There are various way to express a process, different type of models have different characters and capability. The detail they can represent can be limited, Using different model to describe the process and cross checking can make sure the details are represented as much as possible. Also, functionality of different models are different and…[Read more]

We cannot make all diagram look the same. people have different preference of the layout for sure. If the classes, multiplicity and relationships together made up a diagram that make sense, this diagram is correct.
And you also mentioned syntax, that’s a good point, the syntax should be proper as well.

I agree that multiplicity is an important factor that has impact on the diagram. The diagram should make sense with the description of those factors. and yes all diagram can be correct as long as they make sense and fit with narrative.

Some objective factors provided in the narrative can be used to evaluate the diagram. Diagrams can be different based on different understanding of narrative. But objective factors such as classes, relationships and attributes should be identified in the same manner. The order of classes and diagram layout can be different based on personal…[Read more]

Business objectives are definitely the first to consider, the value perspective of data is essential factor of achieving those objectives. The design failure will resulting useless data analysis and inefficient business process. It is true that designers use their experience in database design that ignore the diversity interaction of data and…[Read more]

The importance of data analysis and befits of analyzing data before physical design are well explained.
The idea of integration is fairly important for information system management , in terms of financial cost and time allocation. It is a great way to avoid redundancy and extra cost.

Data is always flexible. Regardless the detailed analysis of data before the database design will result in ineffective work.

Data is the main actor, while database is assistance for it. If designers start modeling physical database and then arrange the data based on physical structure, the original identity and feature of data may be…[Read more]

Your idea for organization that does not have standard is really good. Using existing industry standard is much easier than develop their own, also i like the idea of data dictionary, good way to store and retrieve information needed efficiently. The recourse you mentioned also inspired me。

I love the idea of easy training. It is essential to get new comers understand the standard of communication, so that they can get into the work efficiently.
And definitely, it is essential for the communication with different organizations, both side can understated and exchange their ideas effectively, makes the corporation easier to process.

Using standard techniques makes the communication easier. Communication is an important way to improve your ideas.
When you communicate your idea of diagram with others, formal techniques will be clear and straightforward. The other person can understand your idea clearly and provide suggestion effectively.

Not only within the origination,…[Read more]

I’ve worked in a project for one of my MIS major course during undergraduate, as a business analyst. Our client is called BeHeardPhilly, a Temple University based research and survey platform covers Philadelphia area. Our key stakeholders involved the executives and key employees at BeHeardPhilly. Our project is to develop a client facing…[Read more]