0
What else can I help you with?
Purpose of Information flow diagram and Entity Relationship diagram.?
Information flow diagram is used to visually represent the flow of information within a system, showing how data is input, processed, and output. Entity Relationship diagram is a visual representation of the relationships between entities in a database, illustrating the structure of the database and how data is organized. Both diagrams help in understanding and designing systems more effectively.
What are the advantages and disadvantage of system diagrams?
Advantages of system diagrams include visualizing complex systems, identifying relationships between components, and facilitating communication among stakeholders. Disadvantages may include oversimplification, potential misinterpretation, and difficulty in capturing dynamic interactions.
When using a procedural text that includes both written instructions and diagrams how should you use the information to complete the procedure?
You should read the written instructions carefully to understand the steps involved in the procedure. Then, refer to the diagrams to visually reinforce your understanding of each step. Use both sources of information together to successfully complete the procedure.
What is information that exist on a physical medium such as paper?
a printout
what is the most effective strategy in gathering details about two subjects you want to compare?
The most effective strategy is to create a clear and organized outline that includes key points about each subject you want to compare. Research each subject thoroughly and ensure that you have relevant and accurate information. Utilize tools such as charts, graphs, or Venn diagrams to help organize your findings and identify similarities and differences between the two subjects.
How ERD is useful in DBMS?
ERD diagrams are commonly used in conjunction with a data flow diagram to display the contents of a data store. They help us to visualize how data is connected in a general way, and are particularly useful for constructing a relational database
What are 2 most useful tools in designing a network?
Spread sheets, network diagrams
Differentiate logical and physical database?
After all business requirements have been gathered for a proposed database, they must be modeled. Models are created to visually represent the proposed database so that business requirements can easily be associated with database objects to ensure that all requirements have been completely and accurately gathered. Different types of diagrams are typically produced to illustrate the business processes, rules, entities, and organizational units that have been identified. These diagrams often include entity relationship diagrams, process flow diagrams, and server model diagrams. An entity relationship diagram (ERD) represents the entities, or groups of information, and their relationships maintained for a business. Process flow diagrams represent business processes and the flow of data between different processes and entities that have been defined. Server model diagrams represent a detailed picture of the database as being transformed from the business model into a relational database with tables, columns, and constraints. Basically, data modeling serves as a link between business needs and system requirements. Two types of data modeling are as follows: * Logical modeling * Physical modeling If you are going to be working with databases, then it is important to understand the difference between logical and physical modeling, and how they relate to one another. Logical and physical modeling are described in more detail in the following subsections. Logical modeling deals with gathering business requirements and converting those requirements into a model. The logical model revolves around the needs of the business, not the database, although the needs of the business are used to establish the needs of the database. Logical modeling involves gathering information about business processes, business entities (categories of data), and organizational units. After this information is gathered, diagrams and reports are produced including entity relationship diagrams, business process diagrams, and eventually process flow diagrams. The diagrams produced should show the processes and data that exists, as well as the relationships between business processes and data. Logical modeling should accurately render a visual representation of the activities and data relevant to a particular business. The diagrams and documentation generated during logical modeling is used to determine whether the requirements of the business have been completely gathered. Management, developers, and end users alike review these diagrams and documentation to determine if more work is required before physical modeling commences. Typical deliverables of logical modeling include * Entity relationship diagrams An Entity Relationship Diagram is also referred to as an analysis ERD. The point of the initial ERD is to provide the development team with a picture of the different categories of data for the business, as well as how these categories of data are related to one another. * Business process diagrams The process model illustrates all the parent and child processes that are performed by individuals within a company. The process model gives the development team an idea of how data moves within the organization. Because process models illustrate the activities of individuals in the company, the process model can be used to determine how a database application interface is design. * User feedback documentation Physical modeling involves the actual design of a database according to the requirements that were established during logical modeling. Logical modeling mainly involves gathering the requirements of the business, with the latter part of logical modeling directed toward the goals and requirements of the database. Physical modeling deals with the conversion of the logical, or business model, into a relational database model. When physical modeling occurs, objects are being defined at the schema level. A schema is a group of related objects in a database. A database design effort is normally associated with one schema. During physical modeling, objects such as tables and columns are created based on entities and attributes that were defined during logical modeling. Constraints are also defined, including primary keys, foreign keys, other unique keys, and check constraints. Views can be created from database tables to summarize data or to simply provide the user with another perspective of certain data. Other objects such as indexes and snapshots can also be defined during physical modeling. Physical modeling is when all the pieces come together to complete the process of defining a database for a business. Physical modeling is database software specific, meaning that the objects defined during physical modeling can vary depending on the relational database software being used. For example, most relational database systems have variations with the way data types are represented and the way data is stored, although basic data types are conceptually the same among different implementations. Additionally, some database systems have objects that are not available in other database systems. Typical deliverables of physical modeling include the following: * Server model diagrams The server model diagram shows tables, columns, and relationships within a database. * User feedback documentation Database design documentation Understanding the difference between logical and physical modeling will help you build better organized and more effective database systems.
What is er model in dbms?
In software engineering, an Entity - Relationship model(ER model for short) is an abstract and conceptual representation of data. Entity-relationship modeling is a database modeling method, used to produce a type of conceptual schema or semantic data model of a system, often a relational database, and its requirements in a top-down fashion. Diagrams created by this process are called entity-relationship diagrams or ER diagrams.learn more www.ngprakasam.hpage.com
Where can one view a template for a database diagram?
One can view a template of a database diagram by visiting Google Images. An example is also shown in the Office section of the Microsoft website. Tutorials for database diagrams are explained on the Edraw site.
Are database can exist in paper?
A database itself cannot physically exist on paper, as it requires a digital format for storage and organization of data. However, the structure and contents of a database can be represented on paper through diagrams, schemas, and documentation. These representations help developers and users understand the database design and functionality.
Purpose of Information flow diagram and Entity Relationship diagram.?
Information flow diagram is used to visually represent the flow of information within a system, showing how data is input, processed, and output. Entity Relationship diagram is a visual representation of the relationships between entities in a database, illustrating the structure of the database and how data is organized. Both diagrams help in understanding and designing systems more effectively.
Which is the first uml diagram drawn while designing a system?
Which UML diagram is drawn first depends on the software design process, system analysed or designed, etc. If you start by collecting requirements, your first diagrams will be use case diagrams. If you start by existing system analysis, it could be class diagrams of domain model. If you create some services, you might start with component diagrams. If your system is in specific domain, you might start with profile diagrams...
Can you create diagrams and graphs with database management software?
Yes, you input the info and it can tell you where a company has profited or needs to improve on quality control etc.
UML diagrams for invoicing system?
Ah, creating UML diagrams for an invoicing system can be a delightful experience. Start by sketching out a use case diagram to understand the interactions between users and the system. Then, move on to designing class diagrams to represent the different objects and their relationships within the system. Remember, there's no mistakes in UML diagrams, just happy little accidents that can be easily corrected.
Where can you find automotive wiring diagrams?
Your local library has access to free online automotive repair information and resources, including wiring diagrams, for nearly all makes, models and years. Go to your library's website and look for the EBSCO host research database link. If your libarary doesn't have a website, stop in and ask the associate working in the reference section to look this up. Don't make the mistake of wasting money on a disreputable website for information that may or may not be reliable. Professional-grade Automotive Wiring Diagrams are available from the following sources: Alldata [alldatadiy.com] (black & white circuits) $25 Mitchell Repair [eautorepair.net] (black & white circuits) $10 Automotive Hobbyists [ahdol.com] (full-color circuits) $10 // Free wiring information (not diagrams though) is available from the following sources: Install Doctor [installdr.com] The 12 Volt [the12volt.com] Free wiring diagrams are available from the following sources: Free Auto Mechanic [FreeAutoMechanic.com]
All the following diagrams show gravitational foreces except?
There are no diagram to derive the answer. So very sorry.
