In relational database storage, what are the pros and drawbacks of the following options? Keep each relationship in a separate file.
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In relational
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- Access path A database table is composed of records and fields hold data. Data is stored in records. A field is a part of a record and contains a single piece of data for the subject of the record. The access path for finding the list of books is AUTHOR: AuthorID, Lname BOOKAUTHOR: AuthorID, ISBN BOOKS: Pubdate, ISBNEach of the following methods for storing a relational database has two benefits and two drawbacks. Create a separate file for each relationship.Which of the following database operations should be handled with extra care?
- Answer the following prompts 1The InstantRide Management team founded a new team for car maintenance. The new team is responsible for the small maintenance operations for the cars in the InstantRide system. The main idea is to take actions faster and minimize the time spent for the maintenance. Therefore, the Car Maintenance team wants to store MAINTENANCE_TYPE_ID (char(5)) and a MAINTENANCE_TYPE_DESCRIPTION (varchar(30)) in the database. Using MAINTENANCE_TYPE_ID as the PRIMARY KEY, create a new table, MAINTENANCE_TYPES, and send the table description with the column names and types to the Car Maintenance team. 2The Car Maintenance team also wants to store the actual maintenance operations in the database. The team wants to start with a table to store CAR_ID (CHAR(5)), MAINTENANCE_TYPE_ID (CHAR(5)) and MAINTENANCE_DUE (DATE) date for the operation. Create a new table named MAINTENANCES. The PRIMARY_KEY should be the combination of the three fields. The CAR_ID and MAINTENANCE_TYPE_ID…In a relational database, a select operation is used to minimise the size of a table by eliminating columns that do not fulfil certain constraints.Is this statement true or false?name PERSON address salary fee EMPLOYEE STUDENT thesis RESEARCH TEACHING POST GRAD UNDER GRAD Year = 4 FINAL YEAR LECTURER TUTOR SUPERVISOR project courseno PART II: University Database in MYSQL • Create a database and its tables and constraints based on the relational model of PART I. • You can use my slides and any other resources to complete this exercise. • Submit the SQL statements you used to create the database and its tables (you can copy/paste directly from the mysql console).
- In a relational database, a select operation is used to minimise the size of a table by eliminating columns that fulfil certain criteria.Is this the right answer or the wrong answer?It's possible that the referential integrity of a database may be compromised, which would have disastrous effects. What are some of the most frequent errors that you find yourself making?In a relational database, a select operation reduces the size of a table by removing columns that meet certain requirements.Is it accurate or inaccurate?
- Step 1 Let us see the answer:- Introduction:-A single table may be used in a simple database, such as a contact list. Many databases, on the other hand, make use of many tables. When you establish a new database, you create a new file on your computer that serves as a container for all of your database's objects, including tables. A table can be created by starting a new database, inserting a table into an existing database, or importing or linking to a table from another data source such as a Microsoft Excel workbook, a Microsoft Word document, a text file, or another database. A new, empty table is automatically inserted when you create a new, blank database. After that, you may start defining your fields by entering data into the table. Step 2 Add a field by entering a data You can add a field to a table by entering data in the Add New Field column of the datasheet when you create a new table or access an existing table in Datasheet view. Based on the value you enter, Access…A database at a college must support the following requirements: a. For a department, store its number and name. b. For an advisor, store his or her number, last name, first name, and the department number to which the advisor is assigned. c. For a course, store its code and description (for example, DBA210, SQL Programming). d. For a student, store his or her number, first name, and last name. For each course the student takes, store the course code, course description, and grade earned. Also, store the number and name of the student's advisor. Assume that an advisor might advise any number of students but that each student has just one advisor. Design the database for the preceding set of requirements. Determine any functional dependencies. List the tables, columns, and relationships. In addition, represent your design with an E-R diagram.To what extent may the integrity of a database's references be broken? Which mistakes do you make most often?