1- DFD provide the overview of data as well as functional

Q: Define each of the following terms: h. schema

A: This question is based on DBMS.

Q: Differentiate the three data modeling levels.

A: The three steps of the data modeling process need to be brought to light. What separates them is:…

Q: Define Database in: Informal Definition: Formal Definition: Extended Definition

A: NOTE   The above question belongs to Database Management System from Computer Science.   Below is…

Q: Is there an explanation for the growing use of DFDs in data and processing models?

A: The above question is solved in step 2:-

Q: Define 3-level architecture of database with suitable figures

A:

Q: What does Data modeling facilitate?

A: Given: What does Data modeling facilitate?

Q: Explain the purpose of a Logical Data Model.

A: The problem is based on the models of database management system.

Q: DFDs are becoming more popular as a data and processing paradigm, and this popularity is expected to…

A: Given: A Data Flow Diagram (DFD) is a simplified form of a Data Flow Diagram. It is possible to…

Q: What distinguishes structural from data independence?

A: When modifications to the file structure may be made without affecting the appliance program's…

Q: Give examples of data that are suited for presentation in three dimensions.

A: Given: Give examples of data that are suited for presentation in three dimensions.

Q: Direct connections between external entities and the database are not permitted. This is one of the…

A: A Data Flow Diagram (DFD) depicts the flow of data across a cycle or framework. DFDs help you…

Q: DFDs are becoming more popular in data and processing models. Is there any reason for this?

A: answer is

Q: Explain the major features and data modeling structures of a universal (packaged) data model.

A: Explain the major features and data modeling structures of a universal (packaged) data model.…

Q: The implementation of a data system that is isolated from other data systems may cause a number of…

A: INTRODUCTION: Information system abbreviated as "IS" It is an organisational structure that is…

Q: t of pros and downsides. Why is MetaData so critical in a data warehouse?

A: Introduction Metadata is "information about other data," not the data itself, such as the text of a…

Q: For what reasons are DFDs being used more often in data and processing models?

A: Given: DVDs are being used more and more in data and processing models because of how useful they…

Q: How the levels of abstractions apply their impact in defining the structure/schema of data,…

A: Case Study: Complex data structures are present in database systems. Developers utilize the Data…

Q: draw the corresponding Schema.

A:

Q: What are the disadvantages of Data Model?

A: Answer to the given question: The data Model has many disadvantages but the two main disadvantages…

Q: What is the reason for a data object not being included in a data model?

A: What is the reason for a data object not being included in a data model?  Data models are visual…

Q: Describe some instances of data that might be appropriate for presenting in three dimensions.

A: Answer: There are so many instances of data to representing three dimension. we will discuss here…

Q: Why does a data object not get included in a data model and what are the possible reasons for this?

A: Given: Why does a data object not get included in a data model and what are the possible reasons for…

Q: SECTION A 1. Draw a level 1 DFD, clearly mentioning the activities, to automate street food ordering…

A: To create the Level 1 Data Flow Diagram. This highlights the main functions carried out by the…

Q: Distinguish the three layers of data modeling.

A: There are 3 layers of data modeling. They are 1. Conceptual data modeling 2. Logical data modeling…

Q: 1. Create a DFD 2.Convert the EERD into your logical schema

A: I attached your answer below.

Q: Is there a justification for the increased use of DFDs in data and processing models?

A: The above question is answered in step 2:-

Q: Q3. What constitutes the logical relationship existing between individual elements of data.

A: Given : What constitutes the logical relationship existing between individual elements of data.

Q: An information system architecture for data warehousing might be comprised of a variety of…

A: According to the question, we have to clarify and explain the information system architecture for…

Q: To Draw sequence diagram the third column should be a) Boundary object b) Actor of use case c)…

A: Defined to draw a sequence diagram the third column should be

Q: 1) Design an Object-Relational geodatabase, E-R diagram, and schema from the following elements.…

A:

Q: Logical data modeling depicts the organization of data and its interrelationships without concern…

A: Data models are those models that form the foundation for an organization's project planning. Data…

Q: Why have DFDs become so commonplace in data and processing models?

A: Introduction: A graphical method for summarizing the transfer of data across the processing…

Q: What is meant by leveling of DFDs in data and process modelling ?

A: The meaning of leveling of DFDs in data and process modeling is given below.

Q: A data-structure is defined as the logical organisation of data. What kind of data structures are…

A: Answer: There are two types of data structure. Linear Data Structure Non-Linear Data Structure…

Q: an ER-Diagram for a University database. A university consists departments. Each department offers…

A: Lets see the solution.

Q: Create a workflow diagram (WFD) to show the activities from data generation, to data capture, to…

A: here we have given a work flow diagram for showing the activities for hotpot Korean restaurant. You…

Q: 5. A data warehouse can be modeled by either a star schema or a snowflake schema. Briefly describe…

A:

Q: erational databases f

A: List the disadvantages of operational databases for BI.

Q: Distinguish between the three data modelling levels.

A: What is data modeling: Data modeling is the practice of using words and symbols to represent data…

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: In a three-schema design, the exterior, internal, and conceptual levels are all strictly segregated,…

A: The external level or programming level, the internal level or database administration level, and…

Q: 1.When drawing a DFD of the symbols Process, Data store, and External entity, one must always be…

A: It is defined as a diagram that shows how data is processed within a system based on inputs and…

Q: What are the possible ways of data exchange? Explain with the aid of diagram.

A: Given that What are the possible ways of data exchange? Explain with the aid of diagram. There are…

Q: Derive relations from conceptual model to logical data model. Identify the PK and FK

A: The given problem is a database modeling problem where the entity-relationship model is given. The…

Q: Q1/Consider a database used to record persons and each person has name, age, phone number, and…

A: The entity we have are Person Company The relationship between person and company is one to many…

Q: Data Modeling is the first phase in the process of database design and is the most important.…

A: Modeling of Data The Data Model is a visual depiction of objects and their interactions. Data…

Q: Data Modelling is the primary step in the process of database design. Compare and contrast…

A: Data modeling: It is the process of creating data model for an information system by applying formal…

Data Dictionary

A database management system has an entity-relationship diagram, data dictionary, and data model as some of its key components, which are tools for the users who are managing the database. One of them is the data dictionary. The data dictionary can also be called metadata. By definition, metadata is a generic concept in the world of information and technology. An example of metadata could be meta-information about a media file or an image file, like author, location, last updated, size, etc. The contents of a data dictionary are names, attributes, and properties of main data elements which are captured during an experiment or stored in an information system, for example, databases. We can also call it a central repository of information about the main data.