Computer Information Technology Study guides, Class notes & Summaries

MIS 665 Topic 3 DQ 2 By definition, simulations require a distribution to be specified (e.g., normal, Poisson). Many times, the exact distribution to be used is unknown, so it must be assumed. One argument against using simulations to perform risk analysis is that there is no real benefit because the set of assumptions is simply shifted from assumed parameter values to assumed distributions of parameters. Comment on this argument and justify your opinions with reasons, facts, and examples.

MIS 665 Topic 3 DQ 1 Before computers were widespread, almost all risk analysis was done without simulation. Therefore, only a handful of scenarios could be formulated to understand the risk of a decision. Typically, a best-case and worst-case scenario was determined and decisions were based on these two scenarios. What are some of the drawbacks of this decision-making approach? Specifically, how does the capability to summarize 1,000s of simulated scenarios improve the approach?

MIS 665 Topic 1 DQ 2 Technically, once a time series model is built, any future value can be forecasted. For example, assume you built a model that forecasts monthly sales of a product given the last 3 months of sales. Using the model, you forecasted monthly sales for the next 6 months, and the model provided very accurate predicted sales. Your manager wants to use your model to predict sales for the next 5 years. What are some problems that could occur with extending the forecast horizon out t...

MIS 665 Topic 1 DQ 1 Forecasting techniques rely on the adage that history repeats ts itself. Many times, though, it has been noted that there is no guarantee that historical patterns will repeat and, even if they do, it can be difficult or impossible to predict when a pattern will repeat itself. Provide two time series examples that seemed stable and predictable until there was a significant change to the pattern. Was there a way to predict the pattern change? Explain.

MIS 660 Topic 1 DQ 1 Suppose you wanted to estimate the average household income of all Grand Canyon University (GCU) students. To expedite the process, you only gather household income data from all your friends who major in business at GCU. You then calculate the average income among your friends and report that it represents the average income of all GCU students. Is this a good approach? If not, how would you gather data to derive a better estimate? Explain your answer.

MIS 610 Topic 8 DQ 1 You have employed several commonly used database automation tools in your work throughout the course. Discuss which of these tools has proven to be the most useful overall. Provide your reflective analysis with support from your work, an industry example, or the Topic Materials.

MIS 610 Topic 7 DQ 2 Google and Amazon have done some amazing work regarding their database management systems. However, one of the constants is a lack of standardization. How do new DBMS products entering the market, such as graph databases, help or hinder companies trying to modernize? Justify your ideas with support from the literature or relevant industry examples.

MIS 610 Topic 7 DQ 1 Referring to the topic reading “Whatever Happened to Object-Oriented Databases?”, do you agree with the position that an object-oriented database is a niche market? Provide your assessment of the author’s stance, supporting your rationale with findings from the literature or relevant examples from the field

MIS 610 Topic 6 DQ 2 Some consider SQL to be an ORDBMS due to several recently implemented features it provides, but most consider it an RDBMS. Oracle once touted itself as an ORDBMS in Release 8, but later retracted that statement in Release 8.1 (while retaining key desirable organizational features). What programs are actually considered “object based”? Select a specific program and explain both its functionality and advantages to a business. Justify your ideas with support from the Topic...