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- Which of the following is FALSE regarding a Disk-Oriented DBMSarchitecture?O The DBMS has an execution engine that will execute queries.O The DBMS has a buffer pool that manages the movement back and forthbetween disk and memory.O The database is all on disk, and the data in the database files is organized intopages, and the first page is the directory page.Which of the following is FALSE regarding a Disk-Oriented DBMSarchitecture? The DBMS has an execution engine that will execute queries. The DBMS has a buffer pool that manages the movement back and forthbetween disk and memory. The database is all on disk, and the data in the database files is organized intopages, and the first page is the directory page.The buffer pool will ask the execution engine for a specific page, and theexecution engine will take care of bringing that page into memory. In order to operate on the data the DBMS needs to bring the data into memory.Which of the following is/are the primary features of a DBMS? (A) To provide an environment that is congenial to user (B) To store the information (C) To retrieve information (D) All of the above
- Which of the following three backup types may be used for database recovery? Give a brief description of what each backup level performs.Which of the following database encryption techniques makes it difficult to perform database functions (searches, indexing, etc.)? [A] Application-level encryption [B] File-level encryption [C] Transparent encryption [D] Volume encryption1. If a user has only read authorization for the database, can he modify the data in the database? 2. If a user has only read authorization for the database, can he retrieve data from the database?
- If there is a database by the name StudentMarks in MongoDB then you can use use StudentMarks command to switch that database and start working on this database. But let’s assume that there is no database by the name StudentMarks in MongoDB. In this case if you still prefer use StudentMarks command than can be still OK and create the database and switch to it or would this command cause an error?Explain what happens in both scenarios?Which of the following computerized control procedures would be most effective in ensuring that data uploaded from personal computers to a mainframe are complete and that no additional data are added? () Self-checking digits to ensure that only authorized part numbers are added to the database. () Passwords that effectively limit access to only those authorized to upload the data to the mainframe computer. () Batch control totals. including control totals and hash totals. () Field-level edit controls that test each field for alphanumeric integrityIn this exercise, you will create tablespaces and change their characteristics.1. Connect to the database as user SYSTEM.2. Create a tablespace (MYTBSP_YourName) in a suitable directory—anydirectory on which the Oracle owner has write permission will do:3. Create a table in the new tablespace, and determine the size of the firstextent:4. Add extents manually, and observe the size of each new extent byrepeatedly executing this command,5. Take the tablespace offline, Try to insert some data in to the table, try todelete data from table, observe the effect, and bring it back online. 6. Drop the tablespace, and use an operating system command to confirmthat the file has indeed gone:
- in sql User_123 has successfully logged on to the database in the past, but today he receives an error message stating that he cannot log on. What is the most likely cause of the problem? Select one: a. User_123's CREATE USER privilege has been revoked. b. User_123 's CREATE SESSION privilege has been revoked. c. User_123's user account has been removed from the database. d. One or more object privileges have been REVOKEd from User_123 .Which of the following statements is most accurate? (refer to the JustLee Books database).a. Authentication procedures prevent any data stored in the Oracle 12c database from being stolen or damaged.b. Authentication procedures are used to limit unauthorized access to the Oracle 12c database.c. Oracle 12c authentication doesn’t prevent users from accessing data in the database if they have a valid operating system account.d. Authentication procedures restrict the type of data manipulation operations that a user can performAlternative Assignment 2 Task: Create a protected user account database.using PHP and SQL Detail: Create a protected user account database where is security identify a user is allow them to access to the system (Home page), based on the following requirements: You suppose to implement secure registration form using regular expression and proper validation, login page with username and password-based authenticated using the following mandatory: Must allow the creation, deletion of user accounts Must provide a demonstration application that grants user access when provide a valid username/password pair The passwords must be protected. No administrator who has access to the underlying file system should be able to see clear text passwords (cryptographic hashing). The password file itself should be protected from tampering Reject any attempts to provide invalid data. Each user account required a validation Password must be protected using cryptography hashing such as md5, sha1,…