just answer true/false. a] There are three main components of ER model which are an entity, an attribute and a relationship. b] Composite attributes are attributes that can have many values. c] Database programming languages receive all application requests and translate them into the complex operations required to fulfill those requests.

Q: tionship (ER) diagrams so important for database des

A: Introduction: An entity relationship diagram depicts how these entities are related to one another.…

Q: Which ones are super keys for course? (a) course id (b) course id, title (c) course id, title,…

A: The attributes “course_id” and “title” can be used to identify the rows of “course” table uniquely.…

Q: Consider the following relations for a database that keeps track of student enrollment in courses…

A: A relational database is a type of database that keep data and access points that are related to…

Q: Draw a customer-input screen for a utility company. What information should be captured? In what…

A: Solution ::   Some involve advances in basic hidden (under) display and interface technologies…

Q: Contrast the top-down nature of database development during conceptual data modeling with the…

A: The difference between the nature of data development Databases are structured data set and all…

Q: Describe an entity, an entity type, and an entity set in a database management system?

A: Entity: The entity is an object, place, or thing which has its independent existence in the real…

Q: What type of relationship in the conceptual model is converted to an entity in the logical database…

A: Conceptual ERD models the business objects that should exist in a system and the relationships…

Q: Give an example of a database management system for each of the systems listed above in your…

A: A computerized data-keeping system is all that a database management system (or DBMS) really is,…

Q: Is a database trustworthy if it complies with entity and referential integrity, or does that…

A: Ensuring the accuracy and consistency of data throughout its existence is known as data integrity.…

Q: A physical database can only be designed with certain inputs.A physical database can only be…

A: Physical database: A physical database is both the actual hardware holding the data files and the…

Q: Can cardinality between individuals be translated/read from both ends of the notation while dealing…

A: The answer to your question Can cardinality between individuals be translated/read from both ends is…

Q: Operational data base are present at the backend of all our information systems. What good can a…

A: Operational database  The operational database is defined as the online transaction processing…

Q: What is structural database testing, and how does it vary from other types of testing?

A: Please find answer in below step.

Q: ER-diagrams are high-level design of the Database. The given ER-diagram describes the Dentist…

A: Weak entities are represented with double rectangular box in the ER Diagram      office, supplier,…

Q: State two conditions that indicate when a database designer should consider using supertype/subtype…

A: A supertype is an entity which has a parent child relationship with a subtype, and it contains…

Q: Unlike a database, which stores data, an information system makes use of it. Is there any impact on…

A: The Answer:

Q: Map the relational schema of Figure 6.14 into an ER schema. This is part of a process known as…

A: the answer is an given below :

Q: Write down if the following sentences are true or false.  a. A database system includes both DBMS…

A: Since we can answer only up to one question and three subparts. So we'll answer the first three…

Q: Consider the following relations for a database that keeps track of student enrollment in courses…

A: The answer has given below :

Q: What does structural database testing entail, and how does it differ from other kinds of testing?

A: Testing is process of checking components to see whether it is producing expected output or not. In…

Q: What are constraints in database. Provide a real-world example. What are the consequences If we do…

A: Definition:- The type of data that can be entered into a table is limited by constraints. This…

Q: Elaborate on the concept of the relational database model by providing a real example?

A: answer is

Q: Is it ever a good idea to use composite primary keys? What are your thoughts on using composite…

A: Composite primary keys are a special type of primary key.

Q: The association between two or more entities in a database system is classified as a. dynamic…

A: The relationship is the association between two or more  entities in a database system.

Q: A relational database can't have relationships like this, as shown by the examples given?

A: Relational Database: A relational database is a form of database that stores and makes data…

Q: Q2. By giving an example, define "External Schema" and "User View"

A: ANSWER : EXTERNAL SCHEMA : An external schema describes the part of the database which specific user…

Q: What is the process by which a data model is converted to a database design?

A: Data models are used during the database design process to represent the data, All of these things…

Q: the relationship between a table of Movies and a table of ActorsActresses and how might it be…

A: the solution is an given below ;

Q: 2. The figure below shows part of an ER diagram. Map the part shown here to relational database…

A: A relational database schema is something which describes about the table. The schema includes the…

Q: What are the benefits of adopting one data model for conceptual and logical design rather than two…

A: introduction: The development of a streamlined, logical database that eliminates redundancy, reduces…

Q: What precisely does a database field represent? What does this have to do with anything?

A: Introduction: It's a data column that denotes a certain feature or function. A database attribute's…

Q: 5) Consider a database used to record of persons and each person has name, E-mail, one numbers, and…

A: The entity is Teacher  School School can have one or more teacher will a teacher will be teaching in…

Q: What are the benefits of utilizing the same data model for both conceptual and logical design as…

A: Data Model : The data model is defined as an abstract model that organizes data definition, data…

Q: Write the short answers for the given question. Answer in 3-5 line maximum. A. Give examples of…

A: A.  systems in which it may make sense to use traditional file processing instead of a database…

Q: Consider the following ER model, A) describe the database entities, attributes, relationships and…

A: Here, I have to provide a solution to the above question.

Q: Why do you feel entity relationship (ER) diagrams are crucial in regard to database architecture?

A: INTRODUCTION: Database architecture: Database architecture is a visual representation of a database…

Q: Can cardinality between individuals be translated/read from both ends of the notation while dealing…

A: Cardinality: Cardinality refers to the maximum or minimal number of elements that may be included on…

Q: Should the cardinality between entities be translated/read from both ends of the notation when…

A: Introduction: Cardinality: Cardinality refers to the maximum or lowest number of components…

Q: Could a major difference between a DW and a database be the level of granularity?

A: The level of granularity defines how detailed or the lowest which can be achieved in storing data.…

Q: Draw a relational database model of exam department?

A: Relational database model of the exam department:-

Q: Transform the ERD below to a database design. Identify the primary keys and foreign keys. Answer…

A: Solution ::    Business rules refer to types of constraints that are present among different…

Q: Construct an E-R diagram for a local grocery store whose customers give their orders through the…

A: Actually, database is a used to stores and maintains the data.

Q: QUESTION 9 focuses on designing an enterprise-wide database that is based on a specific data model…

A: _______ focuses on designing an enterprise-wide database that is based on a specific data model but…

Q: Subject:database administration and management question: select a database like customer…

A: Diagram of dependency among relations:               Architecture of Distributed Database:

Q: The process of reading a database schema and producing a data model from that schema is known as:

A: Option c is correct✅

Q: 1b)By using a scenario, explain program-data dependence issue found in previous database…

A: Solution :    Explanation : Before discussing the issues found in previous database technologies…

Q: Each of the database models should have one benefit and one downside, so list them all.

A: Introduction: A database model is a set of interconnected principles used in an organization to…

Transaction Processing

Transaction processing is a computational style generally performed by server computers, which supports interactive applications (apps). Transaction processing is also known as information processing, which divides the work into indivisible and individual operations called transactions. The transaction is a set of tasks; a single task is considered as the minimum processing unit that cannot be divided again.