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As data complexity increases today, it is becoming increasingly difficult to apply the traditional ER paradigm for database modeling. In order to handle the complex application better and reduce modeling complexity, the current ER model needs to be enhanced or improved. Consequently, three new concepts were added to the current ER Model as part of […]
February 17, 2023 | DBMS | No comments
An ER diagram is a visual representation of the entities, attributes, and relationships between them in a database. Entities represent real-world objects or concepts that are important to the business or organization. For example, in a university database, entities might include students, courses, and instructors. Attributes are the characteristics of an entity. For example, the […]
February 17, 2023 | DBMS | No comments
The ER (Entity-Relationship) model is a conceptual data model used in database design. It represents the data in terms of entities, attributes, and relationships. Here are the basic concepts of the ER model: Entity: An entity is a real-world object, concept or thing with an independent existence that can be easily distinguished from other objects. […]
February 15, 2023 | DBMS | No comments
What are Data Models in DBMS? In database management systems (DBMS), a data model is a conceptual representation of data structures, relationships, constraints, and rules used to organize, manipulate and store data. A data model provides a way to describe the structure of a database and how data is stored, retrieved, and updated. There are […]
February 15, 2023 | DBMS | No comments
The architecture of the DBMS affects how it is designed. When dealing with a sizable number of PCs, web servers, database servers, and other components connected by networks, the fundamental client/server architecture is used.A workstation and numerous PCs connected by a network make up the client/server architecture.How users connect to the database to complete their […]
February 11, 2023 | DBMS, Uncategorized | No comments
A database management system (DBMS) is a software system designed to manage the storage, retrieval, and manipulation of data in a database. The following are the components of a DBMS: Hardware Software Data Procedures Database Access Language 1. Hardware: The hardware components of a DBMS play a crucial role in storing, retrieving, and processing data. […]
February 11, 2023 | DBMS, Uncategorized | No comments
What is Data? Data is nothing more than raw, unfiltered facts and statistics that are stored or freely flowing through a network. When processed, data transforms into information, which gives it meaning. What is a Database? A database is a group of connected data that facilitates effective data retrieval, insertion, and deletion. The data is […]
February 9, 2023 | DBMS, Uncategorized | No comments
JOIN Clause Of SQL: Join allows you to combine two or more tables in SQL, based on the related column between them. It’s important to keep in mind that for this operation to work, there needs to be a common column in both tables. Based on this application of join there are three types of […]
February 7, 2023 | python | No comments
In SQL, the Limit clause is used to restrict or control the number of records in the result set that is generated by the query. SQL by default displays the necessary number of records beginning at the top, but it also supports the use of the OFFSET keyword. You can use OFFSET to get the […]
February 7, 2023 | python | No comments
In MySQL, sorting is primarily accomplished using the ORDER BY clause. That is, one can sort the results in either ascending or descending order using ORDER BY. If we use the ASC keyword, the ORDER BY statement will sort the results in ascending order in addition to its default behavior. The DESC keyword will be […]
February 7, 2023 | python | No comments