i need help with the sql queries in given files
FIT9132 Introduction to Databases 2020 Semester 1 Assignment 2 - SQL - Traffic Demerit System (TDS) Assignment weighting 15% - Lecturer in Charge: Manoj Kathpalia The local state government wishes to develop a database to record the details of "on-the-spot" traffic offences incurred by drivers. When a driver commits an offence they are stopped and booked "on the spot" by a police officer and provided with an offence notice. Offences cause drivers to incur demerit points which accumulate against the drivers' licence. The system records the details of all registered vehicles driven in the local government area. A vehicle is identified by a Vehicle Identification Number (VIN). Background reading on a VIN is available from several sites such as AutoCheck. Other attributes recorded for a vehicle are the vehicle's year of manufacture, main colour, model name, manufacturer name and vehicle type. Drivers are identified by their licence number. Other attributes recorded for a driver are the driver's mobile number, first name, last name, residential address, date of birth and expiry date for the licence. It is assumed for this task that each driver has a mobile number and that number will be unique. Each demerit (potential driving offence) is identified by a demerit code. A description of the demerit and the number of points incurred for that demerit are also recorded. For example, the demerit with code 108, has a description of "Failing to give way, or stop, or remain stopped" and results in 3 demerit points being incurred by the driver. Each traffic offence by a driver is identified by an offence number. The location of the offence and the date and time at which the offence occurred is also stored. In some circumstances when a driver is stopped by a police officer, for example, a speeding offence, the police officer may also identify other offences such as "Driving contrary to a major defect notice". Each offence recorded has a unique offence number and is for only one particular demerit. The police officer who issued the offence is also recorded. Page 1 of 15 https://www.autocheck.com/vehiclehistory/vin-basics Once a driver has accumulated 12 demerit points over a period of three years the driver’s licence is suspended for a period of 6 months. When an offence committed by a driver is added to the system by the police officer, the system at that time will determine automatically if the licence should be suspended or not. When this occurs the driver’s licence is suspended from the date recorded for the offence which caused the points to equal or exceed the permitted maximum points. The date at which the suspension began and the date at which it ends are to be stored in the system. The driver, if suspended, is not allowed to drive and driving while suspended will lead to a criminal charge and may cause the driver to be jailed. After a driver’s suspension ends, their total demerit points are reset to zero and they begin accumulating points again. For any previously suspended driver, to determine the new suspension date, the system will calculate the accumulated demerit points from the date their last suspension ended. Police officers are identified by an officer id. The system only records the officer's first name and last name. A data model has been created for Traffic Demerit System and is shown below (it is also available from Moodle): TDS Data Model For this assignment, you will populate these tables with appropriate test data and write the SQL queries specified below. You must ensure that any activities you need to carry out in the database to complete the assignment conform to the requirements of the data model displayed above. Page 2 of 15 The schema/insert file for creating this model is available in the archive ass2-student.zip - this file creates the Traffic Demerit System tables and populates several of the tables - you should read this schema carefully and be sure you understand the various data requirements. You must not alter the schema file in any manner, it must be used as supplied. This schema file contains a single commit after the inserts have completed since this is setting up an initial state of the database for you to work with, you should not use this as your method of approach. IMPORTANT points for you to observe, when completing this assignment, are: 1. The ass2-student.zip archive also contains four SQL scripts for you to code your answers in, you should ensure these files are regularly pushed to GitLab server so a clear development history is available for the marker to verify (a minimum of four pushes are required). In each file, you must fill in the header details with your name and student ID before beginning any work. Your script files must not include any SPOOL or ECHO commands. Although you might include such commands when testing your work they must be removed before submission (a 5 mark grade penalty will be applied if your documents contain spool or echo commands) 2. You are free to make assumptions if needed. However, your assumptions must align with the details here and in the assignment 2 forum and must be clearly documented (see the required submission files). REMEMBER you must keep up to date with the Moodle assignment 2 forum where further clarifications may be posted (this forum is to be treated as your client). Please be careful to ensure you do not post anything which includes your reasoning, logic or any part of your work to this assignment forum as doing so violates Monash plagiarism/collusion rules. 3. Queries that use subqueries and SQL conditions unnecessarily to get required data will be penalised. Views must not be used in arriving at any solutions for the tasks you are required to complete as part of this assessment. 4. In handling dates, the default date format must not be assumed; you must make use of the TO_DATE and TO_CHAR functions in all date situations. Failure to do so will incur a 50% grade penalty for questions involving dates. 5. In completing the following tasks, you should design your test data so that you always get output for the SQL scripts/queries specified below - this may require you to add further data as you move through completing the required tasks. Queries that are correct but do not produce any output (“no rows selected” message) using your test data will lose 50% of the marks allocated, so you should carefully check your test data and ensure it thoroughly validates your SQL queries. You may need to rerun the schema, especially when you have been experimenting with your solutions and may have corrupted the database unintentionally. If you suspect that there might be such problems, simply rerun the schema. The schema includes the appropriate drop commands at the head of the file. Page 3 of 15 Assignment Tasks Using the supplied schema file (tds_ass2_schm_insert.sql) create the tables for the Traffic Demerit System and insert the supplied values. This provides you with a starting point for the following tasks. TASK 1: Data Manipulation (23 marks): (a) Load selected tables with your own additional test data using the supplied Q1a-tds-insert.sql script file, and SQL commands which will insert, as a minimum, the following sample data - ● 20 OFFENCES ● 3 SUSPENSIONS Please note, these are the minimum number of entries you must insert; you are encouraged to insert more to provide a richer data set to draw from. For this task only, data that you add in the database should follow the rules mentioned below: 1. The primary key values for this data should be hardcoded values (i.e., NOT make use of sequences) and must consist of values below 100. 2. Offences that you add must involve at least 12 different drivers. 3. You must not add any offences for the following driver: ● Lion Lawless of 72 Aberg Avenue Richmond South 3121 (Licence no.: 100389) 4. Dates used must be chosen between the 1st January 2016 and 30th June 2019. 5. For each year from 2016 to 2019, you should add at least 4 offences. 6. The suspensions you add in the database should not be in just one year, e.g., you should not add all the suspensions in 2018. 7. The suspensions you add in the database should not belong to just one driver, e.g., you should not add all the suspensions for the driver with licence number 100100. 8. A suspended driver cannot incur extra offences under this system while suspended. If a driver commits a driving offence while suspended their vehicle is impounded and they are sent before the court (this means you must not add an offence to a suspended driver until their suspension period has expired). Page 4 of 15 9. The supplied trigger shows the current total demerit points for a driver when you insert a new offence. You will need to run your inserts one by one in your offence date order, taking appropriate action if the drivers' accumulated points pass the 12 demerit point threshold. Any offence that you add, and any appropriate action that you may have to take as a result of the addition of the new offence, must be managed as a single transaction. For this task ONLY, you can look up and include values for the loaded tables/data directly where required. However, if you wish, you can still use SQL to get any non-key values. You are reminded again that in carrying out this task you must not modify any data or add any further data to the tables which were previously populated by the supplied schema file. [14 marks] For all subsequent questions (Q1b onwards) you are NOT permitted to manually: ● lookup a value in the database, obtain its primary key or the highest/lowest value in a column, or ●