Concept explainers
(a)
DBMS (
It is used to define, manage and manipulate database and make it easy for the user to store and retrieve the data.
(b)
Explanation of Solution
To determine whether there is any vacancy available for flight 243:
The application software of DBMS is used. It is a type of query...
(c)
Explanation of Solution
How to organize a relation in mass storage:
The main function of DBMS is to store a large amount of data and retrieve the data whenever necessary...
(d)
Explanation of Solution
To determine the number of times a user can mistype a password before the termination of the conversation:
It totally depends on the confidentiality and security of the conversation that how much attempt should be given to the user. If the conversation is highly secured then only one or two attempts were given to the user...
(e)
Explanation of Solution
How to implement the PROJECT operation:
It totally depends upon the designer of DBMS as he designs the basic routin...
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Computer Science: An Overview (12th Edition)
- 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, ISBNarrow_forwardWhat exactly is the "normalisation" procedure while dealing with a database, and how does it operate?arrow_forwardCould you describe the duties of a database administrator for me? What ought to be his primary priorities at work, if there are any?arrow_forward
- The watchful eye of a supervisor is very necessary for ensuring that the data in a database is accurate. Therefore, what particular issues does this require needing to take into account? What does an ordinary day look like for someone who works as a database administrator?arrow_forwardWhat are the benefits of enforcing the integrity constraints as part of the database design and implementation process (instead of doing it in application design)?arrow_forwardWhat are the benefits of using a transaction to group database operations together that need to either all complete or be rolled back so none of them complete? Here is an example of when a transaction should definitely be used to be helpful: When any bank / financial institution processes a transfer of money from one account to another account, the operations involved are always (1) to subtract a given amount of money from the source account and (2) add that same amount of money to the destination account. They have to be sure the software doing the transfer groups the above 2 required database operations in a transaction to ensure that if there is any system error/problem during these operations there is no way that money could be accidentally subtracted from an account but not added to the account it is supposed to be transferring to or customers will be very upset at the loss of money!arrow_forward
- Explain why access control techniques in a database approach are more critical than in a flat-file setting. DBMS helps regulate the database environment, but what exactly does it do?arrow_forwardHow long does it take for the database to be created in terms of Big O notation? To the extent that it is a single addition, then sure. The number of removals performed during a single operation. inside the confines of a single piece of marketing collateral? From only one lookup?arrow_forwardA database at a college is required to support the following requirements. Complete the information-level designfor this set of requirements. Use your own experience to determine any constraints you need that are not statedin the problem. Represent the answer in DBDL.a. For a department, store its number and name.b. For an advisor, store his or her number and name and the number of the department to which he or she isassigned.c. For a course, store its code and description (for example, MTH110 or Algebra).d. For a student, store his or her number and name. For each course the student has taken, store thecourse code, course description, and grade received. In addition, store the number and name of thestudent’s advisor. Assume that an advisor may advise any number of students but that each studenthas just one advisor.arrow_forward
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