CST 363 - Introduction to Database - Week 3

-

 


  1. Explain in your words what 3rd normal form is and why it is important. Third normal form, also known as 3NF, is a crucial aspect of database normalization. The third normal form makes sure that the data stored in a relational database is organized to reduce redundancy and improve data integrity. In other words, 3NF is a database schema design approach for relational databases which uses normalizing principles to reduce the duplication of data, avoid data anomalies, ensure referential integrity, and simplify data management. Adhering to 3NF in database design is fundamental for building efficient and reliable database applications. It not only helps maintaining clean data structures but also supports accurate and efficient query responses. 
  2. What is an SQL view. How is it similar to a table? In what ways is it different? An SQL view is essentially a virtual table in a database that is not physically stored. Instead, it is defined by a query. A view can contain all rows of a table or specific rows from one or more tables. The view is stored in the database as an SQL statement that is executed whenever the view is accessed. An SQL view is similar to a table in its usage, structure and querying. Views are used in SQL queries in the same was as tables and can present data in rows and columns format to the user. The differences from the table is its physical storage, performance, data manipulation and read-only nature. Unlike tables, views do not store data physically. Views are virtual and required execution of their defining SQL statements to retrieve data, they might not perform as well as tables in terms of data retrieval.

Comments

Post a Comment

Popular posts from this blog

CST 300 - Major ProSeminar - Week 1

-
This week has been busy with various assignments and quizzes, with the official beginning of the Cohort 19 Computer Science online program. I'm thrilled about the exciting two year journey ahead. Prior to the program's official week, our team got together to work on our team resume, a project that turned out to be both enjoyable and productive. We settled on the name 'Bit of Otter' for our team and designed a logo, deciding to focus in the cybersecurity as our business industry. In terms of coursework, this week was to know more about CSUMB and the program's background. The writing lab introduced us to the APA format, which we'll be using for our papers. Emphasizing the importance of citing external sources to avoid plagiarism, we were encouraged to use additional resources for our assignments. The first paper for CST-300 involves researching a company we aspire to work for in the future. Tasks from the Open Learning Initiative (OLI) included a pretest, reading
Read more

CST 300 - Major ProSeminar - Week 2

-
Image
Module 2 - Lecture (75 Minutes)  For Module 2 lecture, we had to watch two videos and read an article. The first video, titled "The Future Is Faster Than You Think," discusses recent technological advancements. These advances have made our lives easier; for instance, creating heat using a candle used to be hard work, but now it's cheaper and simpler. The video also mentions four types of abundance: computation, time, capital, and communication. These abundances help save time, enhance intelligence, and increase lifespan, among other benefits. Technological progress is excellent because it improves our lives. The second video, "Introduction to Project Management," explains the project lifecycle, project leadership, and how to ensure a project's success. A project has a start and end time, a defined goal, and may arise from various factors like market needs, business requirements, technological advancements, customer requests, legal mandates, social needs, or
Read more

CST 300 - Major ProSeminar - Week 4

-
Week 4 - Learning Journal Post Set Your Educational Goals My educational goal in this computer science program is to graduate in two years and secure a job in the artificial intelligence industry immediately after college. To achieve this, I need to conduct a self-assessment and identify the steps necessary for reaching my goal. Improving public speaking is crucial since I've been a shy person since childhood, impacting my communication skills and connections. To address this, I plan to work on public speaking and actively participate in networking events like hackathons and school events to make new connections. Additionally, I recognize the importance of staying updated on evolving technology and being prepared to enhance my skills accordingly. Taking short trips to other countries for decompression and preventing burnout is something I consider valuable. Finally, to enhance my chances of securing a job post-college, I aim to participate in internships while still enrolled in col
Read more