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Unit: 7 Working with database   Database      Why use a database? Databases make updating data easy and reliable, and they help to ensure accuracy. They offer security features to control access to information, and they help us avoid redundancy. A database is a structure that stores information in an organized, consistent, reliable, and searchable way. The various reasons a database is important are − Manages large amounts of data A database stores and manages a large amount of data on a daily basis. This would not be possible using any other tool such as a spreadsheet as they would simply not work. Accurate A database is pretty accurate as it has all sorts of build in constraints, checks etc. This means that the information available in a database is guaranteed to be correct in most cases. Easy to update data In a database, it is easy to update data using various Data Manipulation languages (DML) available. One of these languages is SQL. Security ...
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  Unit 6 SEP  Introduce Web Page Development Web page development is the process of creating and building websites that people use on the internet. It includes everything from how a site looks , how it works , and how users interact with it. What happens in web page development? 1.       Planning: o     What will the website do? o     Who will use it? o     What pages are needed (Home, About, Contact, etc.)? 2.       Designing (Front-End): This involves deciding: o     Page layout o     Colors, fonts, background o     Buttons, menus, forms Tools used: o     HTML → builds structure o     CSS → adds styling o     JavaScript → adds interactivity 3.       Backend Development: This deals with the server , database , and how data is stored. L...
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UNIT – 6 : POINTERS IN C#

1. Introduction to Pointers in C# A pointer is a variable that stores the memory address of another variable. In C#, pointers are allowed only inside unsafe code , and they work only with value types and arrays . Pointer Declaration Syntax datatype* pointerName; Example: int * ptr; ·          Pointers are allowed only in unsafe context . ·          C# pointers are similar to C/C++ pointers but with more restrictions for safety. 2. Features of Pointers in C# ·           Pointers save memory space. ·           Execution is faster due to direct memory access . ·           Memory access becomes more efficient. ·           A pointer cannot point to: o     A reference type o   ...
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