In database management system, the current set of instance or database snapshot is also called a. mathematical operators of schema b. logical operators of schema c. extension of schema d. intension of schema

Q: n information system makes use of the information stored in a database. How does the existence of…

A: Answer: An information system is used by the DBMS when the user needs it. The information in the…

Q: art of entire database is shown b

A: According to the question we need to answer the question Part of the entire database is shown by…

Q: In terms of which category of processes can be begun when, the readers and writers problem can be…

A: Introduction: The Readers-Writers dilemma is a synchronization issue when some processes (readers)…

Q: In Three-Schema Architecture, the schema in which the part of database is described to the user…

A: Three-Schema Architecture: This framework is used to separate the physical database and user…

Q: 167. In Three-Schema Architecture, the schema which gives details about data types, constraints and…

A: GIVEN: 167. In Three-Schema Architecture, the schema which gives details about data types,…

Q: With clearly labelled diagram(s) and in more than sixty words (60), outline three (3) modern methods…

A: The context If the primary goal of any work analysis is to describe what the operator does, or…

Q: Data Abstraction is defined as Select one: O a. Describing database with a certain level of data…

A: Data Abstraction refers to hiding some amount of data not to be directly visible to user

Q: Draw a database ER model about airport Covid-19 procedure (can include entities like passenger,…

A: ER diagram will contain Airport Flight Worker/ Employee Ticket Store Supplier and all their…

Q: 62. The first step in database development is which of the following? a. Enterprise data modeling b.…

A: Please find the answer to the above question below:

Q: 60. Which of the following database activities allow for the actual retrieval and use of a database?…

A: Data is essentially an unorganized collection of facts and figures. The purpose of a database is to…

Q: Choose a database application with which you are familiar. Design  a schema and show a sample…

A: Design a schema and show a sample database for that application, using the notation of Figure 1.…

Q: 9. Which of the following is the oldest database model? a. Relational b. Hierarchical c. Physical d.…

A: please see the next step for solution

Q: A top-to-bottom relationship among the items in a database is established by a: A Hierarchical…

A: A hierarchical database model is a data model in which the data are organized into a tree-like…

Q: This is a database systems question: What is the cardinality of the 'writes' relationship type? a)…

A: Given questions are multiple choice question so we provide both  explanation below.

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

A: The Answer:

Q: Create a Venn diagrams for each item to visually represent the similarities and differences between…

A: According to the question, we have to explain similarities and differences between centralized and…

Q: he capacity to alter the database schema at one level without altering any other schema level is…

A: A data dependency in applied science may be a scenario within which a program statement…

Q: Which of the following is a Data Model? a. Entity-Relationship model b. Relational data model c.…

A: Given that: Which of the following is a Data Model? a. Entity-Relationship model b. Relational data…

Q: bility to modify schema of database in one level without affecting the schema definition in higher…

A: Ability to modify schema of database in one level without affecting the schema definition in higher…

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

A: answer is

Q: 159. In data modeling, the data constraints, data relationships and data types for the stored data…

A: Given: 159. In data modeling, the data constraints, data relationships and data types for the…

Q: Operational Databases are present at the backend of all our Information Systems. What good can a…

A: Operational database administration frameworks (too alluded to as OLTP On Line Exchange Preparing…

Q: List and briefly describe nine components of a typical database environment.

A: Given: List and briefly describe nine components of a typical database environment.

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: How the concept of ODMG can be utilized to create an object database schema using object definition…

A: ODMG provides a standard data model for object-oriented databases. The object database schema is…

Q: The model for a _____ resembles the hierarchical model in many respects. a. Network database b.…

A: Required: The model for a _____ resembles the hierarchical model in many respects. a. Network…

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: Subject: ER - Diagram to Relational Model Construct an E-R diagram for a local grocery store whose…

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

Q: A multidimensional database model is used most often in which of the following models? a. Data…

A: A multidimensional model views data in the form of a data-cube. A data cube enables data to be…

Q: Discuss the advantages of using the database approach as against the file-based approach.

A: Given:   We have to discuss the advantages of using the database approach as against the file-based…

Q: 53. In enterprise data modeling, which is incorrect? a. You review current systems. b. You implement…

A: Here is the solution which is  mentioned below:

Q: Subject:DataBase Management System Write answers: a.Differentiate between high level language and…

A: The main difference between the high-level language and low-level language is that the programmers…

Q: Operational Databases are present at the backend of all our Information Systems. What good can a…

A: Answer:

Q: Which of the following is example of Object based logical model ? a. Entity Relationship Model b.…

A: Task :- Choose the correct option for given question.

Q: The type of relational database which incorporate the concepts of object database is classified as…

A: Required;   The type of relational database which incorporate the concepts of object database is…

Q: 124. The process of converting the requests into results between three-schema architecture internal,…

A: Mapping :- process of converting the requests into results between three-schema architecture…

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: A database management system based on the concept of ownership is Network database system explain?

A: Given that: A database management system based on the concept of ownership is Network 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: Define and discuss the advantages and disadvantages of materialized views in databases.

A: A view in a database is a query that defines a virtual table i.e. a view created using a query in a…

Q: Which formal method that locates and analyses relation schemas on the basis of their primary,…

A: Normalization that locates and analyses relation schemas on the basis of their primary, candidate…

Q: A data model is: A Used to describe structure of a database. B Set of basic operations on the…

A: Data models define how the logical structure of a database is modeled. The data model is a…

Q: If here are no strict separation between internal and conceptual levels, the language used by…

A: if here are no strict separation between internal and conceptual levels, the language used by…