In a database, a data file is a/n ______. a. collection of related records b. index of the database's objects c. list of the fields in a table d. query result that can be saved as a table A data warehouse is a type of database. True False
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In a
database , a data file is a/n ______.a. collection of related records
b. index of the database's objects
c. list of the fields in a table
d. query result that can be saved as a table
-
A data warehouse is a type of database.
True
False
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- What are the four basic types of operations for a database application? a. Insert, Select, Update, and Delete b. Insert, Update, Delete, and Create c. Insert, Update, Delete, and Render d. Insert, Select, Update, and Render If stringa="Good Morning", what is the value of stringa[1:5]? a. "Good " b. "ood " c. "Good" d. "ood M" The instance that “a survey respondent in service occupation (x) is less likely to report income ” is an example of __________ . a. Missing completely at random. b. Missing at random. c. Missing not at random. d. None of the above.Which of the keys below are not supported by a relational database? a. Foreign keys b. Composite keys c. Dynamic keys d. Primary keysChapter 17 How to manage database security Exercises using the My Guitar Shop Database Use Microsoft SQL Server Write a script that creates a user-defined database role named OrderEntry in the MyGuitarShop database. Give INSERT and UPDATE permission to the new role for the Orders and OrderItems table. Give SELECT permission for all user tables. 2.Write a script that (1) creates a login ID named “RobertHalliday” with the password “HelloBob”; (2) sets the default database for the login to the MyGuitarShop database; (3) creates a user named “RobertHalliday” for the login; and (4) assigns the user to the OrderEntry role you created in exercise 1.
- which database defination languagee(DDL) statemenent is used to change the name of a table in database? a) Rename b) Select c) Alter d) DropA database administrator wants to grant access to an application that will be reading and writing data to a database. The database is shared by other applications also used by the finance department Which of the following account types Is MOST appropriate for this purpose? A-Service B-Shared C-eneric D-Admincreate a new database (named MyUniversity), the creation (using the CREATE command) shouldbe done once. The database is now created and saved locally on your computer. When you close the workbench and reopen it again, no need to re-run this CREATE command again (the compiler will give you an error, as the database you would like to create was already created) Task Description: consider the following relations for a university: Student (sid: integer, sname: string(100 chars), GPA: real, dateOfBirth: date, Did: integer, FirstYear: integer) Department (did: integer, dname: string(30 chars), capacity: integer) Course (cid: integer, cname: string(50 chars), credit: integer) Enroll (studentID: integer, courseID: integer, departmentID: integer, enrollmentDate: date, finalGrade: real) studentID, courseID, and departmentID in Enroll are foreign keys referencing the primary keys of the student, course, and department relations, respectively. Did in Student is a foreign key referencing the…
- Which of these would not be a good primary key for a file of employee records? a. A and B b. Social security number c. Company employee number d. Last nameWhich of the following are true about primary keys? SELECT ALL THAT APPLY. A) They must reference one or more columns in a single table. B) They are usually implemented using an index. C) They guarantee that no two rows in a table have duplicate primary key values. D) They must be defined for every database table.Please show the input including all of the files including pom.xml, or any other file that was created. Create a movie checkout system: Your system should be able to: ● switch between different customers (customers can be hard coded in the database) ● add new movies ● display all the movies in the database ● search for a movie using keyword in movie title or description ● checkout a movie for a particular customer ● return a movie for a particular customer ● display the checkout history for a particular customer ● keep track of the number of available copies and only allow customers to checkout a movie when there are copies available ● use REST API to retrieve a movie by title ● use REST API to retrieve checkout history by customerId Your project should demonstrate the successful implementation of the following knowledge: ● entity class design ● database table structure and relationships ● system setup (Maven dependencies, dispatcher servlet, database connection) ● dependency injection…
- Q1. Use the DBCA to Create a Database In this exercise, you will create a database listener (if one does not exist already) and then create a database to be called MYDB_<your name> using the DBCA, on either Windows or Linux. There is no significant difference between platforms. The illustrations that follow happen to be from Windows.You have been hired at Selianord Group (Pty)Ltd as a Junior database developer where you are going to build a desktop application called LusuFlix. This application will be used at a video rental store. We need different levels of permissions for different users in the database. The store manager should be able to add/update/delete the list of movies. They will be in charge of setting the stock for each movie as well as the daily rental rate. Cashiers should have a read-only view of the list of movies. They should be able to manage the list of customers and the movies they rent. At check out, a customer brings one or more movies. The cashier looks up a customer by their phone number. If the customer is a first-time customer, the cashier asks for their full name, email, and phone number, and then registers them in the system. The cashier then scans the movies the customer has brought to check out and records them in the system. Each movie has a 10-digit barcode printed on the cover.…Create new class DbConn containing a connection string and a single function to insert,update and delete records. It takes query as input and return boolean.• Error correction in search and update records.• Create another function in DbConn to search records that returns the ResultSet.
