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DBMS notes all unit mix

 ---------------------domain constraints ------------------------------- In the context of database management systems (DBMS), domain constraints refer to the rules and restrictions applied to the values that can be stored in a specific attribute or column of a database table. These constraints ensure that the data within a column adheres to a predefined set of rules, maintaining data integrity and consistency. A domain constraint specifies the valid range of values for an attribute, ensuring that only permissible data is stored in that column. Here are some key points to understand domain constraints in DBMS: 1. **Domain:** In DBMS, a domain represents the set of possible values that an attribute or column can have. For example, a domain for a "age" attribute may specify that valid values range from 0 to 120. The domain for a "gender" attribute may define valid values as "male" or "female." 2. **Data Integrity:** Domain constraints play a crucia...
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IWT UNIT 2 NOTES (CSS)

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 --------------------------------introduction to css-------------------------------------------- CSS, short for Cascading Style Sheets, is a stylesheet language used to describe the presentation and visual style of a document written in HTML or XML. It is a fundamental technology in web development that allows web designers to control the layout, appearance, and formatting of web pages. CSS provides a set of rules and properties that define how elements should be displayed on a web page, making it easier to separate the content of a document from its presentation. Here are the key components and concepts of CSS: 1. Selectors: Selectors are used to target specific HTML elements that you want to style. They can be based on element types (e.g., `h1`, `p`), classes (e.g., `.header`, `.button`), IDs (e.g., `#logo`, `#sidebar`), attributes, or even their relationship to other elements in the document structure. 2. Declarations: Declarations define the styles applied to the selected eleme...
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IWT UNIT 4 NOTES

 -------------------------------------Python introduction ---------------------------------------------------------- Introduction to Python for University Level Exam Python is a versatile and powerful programming language widely used in various fields such as web development, data analysis, artificial intelligence, and scientific computing. If you are preparing for a university-level exam on Python, understanding the basics of the language and its key features is essential. In this introduction, I will provide you with an overview of Python, its syntax, data types, control structures, and some important concepts you should know. 1. Syntax and Variables: Python has a clear and readable syntax that emphasizes code readability and simplicity. It uses indentation (whitespace at the beginning of a line) to define blocks of code. Variables are dynamically typed, meaning you don't need to declare their type explicitly. You can assign values to variables using the assignment operator ...
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