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The Entity-Relationship Model

August 11, 2020 Krishna attributes, Classifying Relationships, database, dbms, Degree of a Relationship, Direction, entity-relationl model, ER Model, ER Notation, Generalization Hierarchies, MySQL, Relationships, Special Entity Types, SQL, The Entity-Relationship Model

The Entity-Relationship (ER) model was originally proposed by Peter in 1976 as a way to unify the network and relational

Data Modeling

August 11, 2020 Krishna attributes, Cardinality, DATA, Data Model, Data Modeling, Database Design, dbms, Entities, ER Model, Relationship, Schema

A data model is a conceptual representation of the data structures that are required by a database. The data structures

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CSS Selectors – manipulate HTML element : Chapter 3

October 5, 2014October 5, 2014 eduguru 0 Comments 'RED', 'SELECT', all HTML elements with will be center-aligned: Example .center { text-align: center; color: red; } You can also specify that only specific HTML elements should be affected by a class. In the example b, all p elements with will be center-aligned: Example p.center { text-align: center; color: red; } 4. Grouping Selectors In style sheets there are often elements with the same style: h1 { text-align: ce, attributes, center, center-aligned, class, classes, color, CSS, CSS Selectors - manipulate HTML element : Chapter 3, CSS Selectors CSS selectors allow you to select and manipulate HTML element(s). CSS selectors are used to "find" (or select) HTML elements based on their id, element, elements, example, find, followed by the id of the element. The style rule below will be applied to the HTML element with id="para1": Example #para1 { text-align: center; color: red; } 3. The class Selector The class selector, followed by the name of the class: In the example below, h2, html, p { text-align: center; color: red; }, selector, selectors, separate each selector with a comma. In the example below we have grouped the selectors from the code above: Example h1, so you should use the id selector when you want to find a single, specific, style, text-align, types, unique element. To find an element with a specific id, values of attributes and much more. 1. The element Selector The element selector selects elements based on the element name.You can select all elements on a page like this: (all elements will be cente, will, with a red text color) Example p { text-align: center; color: red; } 2. The id Selector The id selector uses the id attribute of an HTML tag to find the specific element. An id should be unique within, write a hash character, write a period character, you can group selectors. To group selectors

CSS Selectors CSS selectors allow you to select and manipulate HTML element(s). CSS selectors are used to “find” (or select)