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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
Can you explain the concept of table walking and how it is used in data analysis?
Table walking is a method used in data analysis to systematically move through rows or columns of a table to extract or manipulate data. It involves iterating through each row or column to perform calculations, comparisons, or other operations. This technique is commonly used in data processing tasks such as filtering, sorting, or aggregating data in a structured format.
What is used to describe data and what is used to display data in computer?
what is used to describe data and what is used to display data in compuier
What term is used to refer to the data that are used to describe the data in a database?
Data definition is the term used to describe expected data value.
Can XML be used to for data storage?
Yes, XML can be used for data storage. XML store data in the form of nodes and sub-nodes.
What are the advantages and disadvantages of Entity Relationship Diagrams?
Entity-Relationship diagrams are useful for modelling data and the relationships between the data. They can be used when the constraints between data are relatively simple. They do not allow specification of interactions between the data or model how the data changes (there are no processes in Entity-Relationship). Entity-Relationship diagrams are most often used to model databases.
Data modeling in system analysis and design?
data modelling is used for organising and structuring of data. we can get overview through generic modelling. organising of data means representing the data in such a way that it comes in a particular order via graphical representation.
Are the data elements that describe an entity.?
Yes, data elements are the smallest units of data that describe an entity in a database. They represent specific attributes or properties of the entity and are used to store and manipulate information about that entity.
What processes are computers used for in science?
computers in scientific field are used for inventing things
What is entity framework used for?
Entity Framework is used for modeling the entities, models, relationships and logic of business problems that they have to solve. It allows developers to work with data, like customers and customers' addresses without having to worry about the databases and places where the data is stored.
The revenue recognition concept?
The revenue recognition concept is commonly used in accrual form of accounting. This indicates revenue should only be recorded when and entity is completed to a substantial level.
What is the cat walk used for?
Modelling.
What is the use of er diagrams?
A graphical representation of entities and their relationships to each other. Typically used in computing in making databases or information systems. An entity is a piece of data-an object or concept about which data is stored. A relationship is how the data is shared between entities. There are three types of relationships between entities like one-to-one, one-to-many and many-to-many. Entity Relation Diagram is giving you image of how the tables should connect, what fields are going to be on each table, the tables connection.
Which is correct spelling modelling or modeling?
Both are correct. Modelling is used in places like the UK, while modeling is used in the USA.
Any five uses of computer in Scientific Research?
It is used for 1.to do complex computations 2. for data analysis 3. modelling 4.Calculations 5.Storage and Data Transfer 6.Mapping -SubhaGolu
What are the concepts of accounting?
where are 7 Accounting concept in the books of CIE which are done for methods e.g deprecation=prudence if the company will complete forward=going concern etc.idea is more basic to accounting than the accounting unit or entity, a term used to identify the organization for which the accounting service is to be provided and whose accounting or other...Accounting concept are customs and tradition which are used as a guide for preparation of financial statements
What is theoretical entity?
A theoretical entity is a concept or idea that is used in scientific theories to explain phenomena that cannot be directly observed or measured. These entities are often used to help make predictions and understand complex systems in physics, biology, psychology, and other fields of study.
