Concept explainers
(a)
Selection of the appropriate
(b)
Select the appropriate database for the situation in which main requirement of database is to access specific records in a quick manner with any concern regarding to internal structure.
(c)
Selection of the appropriate database for the situation in which it is suitable to organize data as a network association between data items.
(d)
Selection of the appropriate database for the situation in which it is required that DBMS provides quick access to every single record using a key value but also allow convenient access to the components of each record.
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Modern Database Management (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_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_forwardWe would like to design a database to store information that is related to a charity agency, the database requirements are as follows: Information kept about each employee: Employee identification number (unique for each employee), username and password, name for each employee, date of birth, phone, and email. Information kept for each Donation: Donation identification number (unique for each donation), donation date, and donation type. Information kept for each donor: Donor identification number (unique for each donor), the donor name, the donor name stored separately (first name, second name, and last name), the donor address also stored separately (street number, street name, zip code, city), the phone, and the email. Information kept about each item donated: Item identification number (unique for each item), item name, and quantity. Information kept for each needed/supported family: Family name, number of members in the family, nationality, address, income, and phone…arrow_forward
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- Data Modeling is the first phase in the process of database design and is the most important. Comparing and contrasting the Conceptual data model with the Physical data model is important. With the assistance of an example, demonstrates how to list down data (entities), relationships between data, and limitations on data.arrow_forwardShould database designers be aware of any particular approach that, depending on the context in which it is employed, has the potential to have a significant impact on the database's performance?arrow_forwardShould database designers be aware of any particular method that, depending on the environment in which it is employed, may have the ability to significantly alter the efficiency with which a database performs?arrow_forward
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