Systems Development and Project Management

Steam In-Home Streaming {18}

PC gaming and portability do not come together easily. PC gamers always have to compromise in performance, weight, cost, or other things that makes PC gaming fun. Some people just give up portability and let their gaming PC stays in one place just so they can have good graphics and performance. Others end up getting gaming laptops which are portable but less powerful and more expensive.

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Moving from Logical to Physical {1}

As we prepare to take the next step in database design, it is important to relate the new material with what we have already learned. In the article “Logical Versus Physical Database Modeling”, authors Ryan Stephens and Ronald Plew do just that. They describe data modeling as “a link between business needs and system requirements”. They summarize the logical model deliverables as including the ERD, Business process diagrams, and user feedback documentation. Where as the deliverables for physical modeling includes server model diagrams and its feedback documentation.

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Disecting Relationships {5}

It’s becoming clear that Entity-Relationship models can be just as complicated as Human-Relationships. Fortunately, the journal “Improving Database Design through the Analysis of Relationships” is here to shine some light on the subject. This journal quickly covers all of the basics and dives into a detailed study of relationships. They cover such sticky situations which are often not divulged deeply in textbooks such as high degree relationships, derived relationships, and several more. The four aspects they use as a guide to analyzing a relationship are as follows:

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Benefits of RFID’s in Libraries {4}

In an article found in the Faulkner Information Services database, an article written by James G. Barr explains how RFID’s help libraries run and operate their services, staff and other tasks. An RFID is a either a chip or tag that contains data thats transmitted wirelessly to a reader in range. It is more efficient than conventional barcodes and can also be a great theft deterrent for books and other assets. For libraries, it is one of the best information systems solution for their dynamic inventory and tracking their large amount of assets. TAGSYS is a specialized company who provides the tags, readers and software needed. They not only provide for libraries but also pharmacies and textile services. Some benefits from these tags are the data contained in them can tell what the author, title and genre of a book and also keep a more consistent inventory since tags can be read through covers and pages. One big benefit is loss prevention.

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Flaw in Facebook App Allows Account Hijacking {4}

In an article found in PC magazine online. They say that there is a flaw in the iPhone Facebook app that can potentially allow a hacker or mischievous individual access to ones Facebook account. They find that the credentials to such accounts are stored in the plist or program list file within the app in regular text. Security researcher Gareth Wright found the flaw and was notified Facebook of this issue. They are working on a fix but they say that this security flaw is most apparent on a “jail-broken” device. Facebook developers responded by saying that the security of the application is compromised when the user modifies the OS and could potentially allow malicious attacks and software cause information theft and damage. Gareth Wright also says that the Facebook app is also used in different apps as a means of authenticating user information from their Facebook account. He also talks how someone who can create malicious software to extract data whenever such devices are plugged in and allow for such viruses to steal information from the handset. So he says to be careful when plugging in your device to any shared/public computer and public docking and charging stations.

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MySQL 5.6 Preview {1}

In an article posted on Computerworld.com, they talk about how oracle has opened up and previewed their latest version of MySQL. They say that it has many new features that improve the current database system. it allows for an “improved replication and the ability to bypass the SQL framework for faster data access” (Jackson, 2012). Now MySQL is used by big and popular sites that include Facebook and Twitter. New in version 5.6 is GTIDs which are Global Transactions Identifiers. This makes data easier to track as its repeated through different servers and allows it to switch to a another server in case of failure. Also the speed in which queries are requested are improved and can take multiple queries into one unit of work and is able to deliver the results in the JSON format for integration into web apps. Oracle also previews experimental features that can prove useful for developers. one feature that stands out is an API that “allows applications to directly access data from the core innoDB database engine, rather than going through the SQL-database interface”(Jackson, 2012).  this allows large amounts of data to be accessed. Oracle still hasn’t set a release date for this new software.

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Prototype and Waterfall Methods for Database Applications {Comments Off on Prototype and Waterfall Methods for Database Applications}

In this article, the concepts and differences between waterfall models and prototype models and explained. The waterfall (SDLC) method is linear and is regarded as being well structured and organized. The process is basically understanding the requirements, followed by design, implementation, integration, testing the product and finally maintenance. The prototype method involves raw models of the final product right from the start. These models and improved through user feedback until the final product that meets user requirements is completed. Some experts say the prototype method is well suited for example, for online applications where the users are not entirely sure on what they need exactly for their product. Now the waterfall method would be more suited for conventional software projects. If all the user requirements were specified from the beginning, then the waterfall method would be ideal.

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New Virus in Town {Comments Off on New Virus in Town}

Summary:

According to the article from LA Times, the researchers have discovered a malware virus that has invaded 61 countries (Bowden). Viruses have always been a problem for the world because our technology is always getting more hi-tech. The virus that we speak of is a computer virus that can steal data from any computer in the internet world. It has already stolen some data from different countries but mainly from those that were once part of the Soviet Union. The name for this virus is called the Lurid Downloader because it jumps from domain to domain in order to avoid detection. Although we would like our computer to be free of viruses; however, viruses in the technology world cannot be avoid.

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chapter 11 correlation to the article “Android’s rapid growth has some developers worried” {Comments Off on chapter 11 correlation to the article “Android’s rapid growth has some developers worried”}

This article pertains to the Goggle’s open source Android operating system (for mobile phones) that was released last year.  Priya Ganapati of Wired.com says that while the system had a slow start it has become increasingly popular but has run into a few problems.  Mainly the problem is that there are three version of the operating system on the market (Android 1.5, 1.6 and 2.0).  This became a problem because application developer has had to make much correction to there program in order for them to run successfully on all three systems.  That is while an application will run perfectly on one OS system it will not function properly on anther.  Another problem is that certain application will not operate on certain phone that it is the phones do not have the proper hardware to launch these applications.  “Ultimately, developers will have to start making tough decisions on who they want to target and versions of the operating system they want to support” ,says Gilligan (www.cnn.com). 

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Chapter 11 Systems Development and Project Management {Comments Off on Chapter 11 Systems Development and Project Management}

The article, “Make Customer Service Local and Strong” posted on Bloomberg.com talks about the economy forcing businesses to resort to outsourcing in an effort to cut costs. The article makes some clear and precise points. The main point is that customer service is an essential part in any business and if its not addressed as a high priority then the business is doomed. The article pointed out Circuit City as one company that struggled with this. Circuit City let there top managers go and hired less qualified individuals. These switches lead to Circuit city’s demise. The Article then talks about keeping jobs local and how keeping jobs here in America will boost our economy. The author of the article then describes how his personal business has relied a lot more heavily on E-mail. By using e-mail he can respond to common problems quicker and more efficiently then phone calls. The author is trying to make an argument that outsourcing can be avoided and by keeping jobs in America better service can be provided.

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