Populate Your Student T
Mis245 Homework 3 summer 2017 page 2 of 21 Populate your "student" table with at least 20 students, ensuring specific distributions of last names, GPAs, states, credits, and grade levels as detailed in the assignment instructions. Insert students via SQL "insert" commands, assign unique sequential IDs, and examine the effects of duplicate IDs and various queries on the database. Write and execute multiple SQL queries to retrieve subsets of student data based on specified criteria, capturing screenshots of the queries and their results for documentation.
Paper For Above instruction
The purpose of this assignment is to develop proficiency in SQL data manipulation and retrieval within a relational database, specifically focusing on inserting records, handling duplicate primary key values, and executing conditional queries. The first task involves populating a "student" table with a diverse set of at least 20 student records, adhering to constraints on last names, GPAs, states, credits, and grade levels. This exercise requires knowledge of the SQL INSERT command, primary keys, and handling data diversity to simulate a realistic student database.
The initial step involves inserting multiple students, ensuring that at least six students share the last name "Jonesy," but not all, to satisfy the first criterion. Additionally, the dataset must include students with various GPA values: at least one student with a GPA of 3.85, at least two students with GPAs between 3.7 and 3.84, two with GPAs between 2.7 and 3.69, and similarly for other GPA ranges down to below 1.0, with at least one student scoring exactly 1.0. The geographic distribution must include at least six students from Delaware (DE), more than seven from New Jersey (NJ), and more than four from Rhode Island (RI). Furthermore, the dataset must contain students with varying credit totals, including more than two students with over 96 credits, and specific counts of students within particular credit ranges, such as exactly 32, 33, 64, 65, and 96 credits, as well as students with fewer than 32 credits, and those with between 33-64 and 65-96 credits.
Once the data is populated, the student records will be used for subsequent SQL query exercises. These exercises involve attempting to insert a duplicate primary key value for a student with ID '1' to observe MySQL's response and error messages, which demonstrate how the system enforces primary key constraints. The student will then execute a series of SELECT statements to retrieve all student records, filter students based on geographic location or GPA, and organize data according to specified conditions.
Specifically, the queries include retrieving students with last name "Jonesy," students with a B grade GPA (defined as between 2.7 and 3.69) not from NJ, students not classified in the "Honors" grade level, and freshmen from Delaware and Rhode Island ordered by last name. Additional queries require identification of students from NJ with "High Honors" (GPA of 3.85 or above), as well as extracting last names and credits for students outside of NJ, RI, or DE, again ordered by state.
Throughout the assignment, the student will capture screenshots of both the SQL query commands and their resulting data snapshots to demonstrate successful query execution and compliance with specified conditions. These visual evidences serve as documentation for grading purposes, emphasizing the ability to manipulate and retrieve data accurately within a relational database environment.
The overarching educational goal is to reinforce understanding of primary key constraints, data diversity, conditional querying, and data organization within SQL, essential skills for developing robust database applications in academic and professional contexts.
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