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This document discusses Microsoft Access and database management systems. It describes what a database and DBMS are, provides examples of common database applications, and lists some key functions of a DBMS like concurrency, security, and backup/recovery. It then introduces Microsoft Access as a relational database management system (RDBMS) that stores information in tables. The document outlines the main tasks in MS Access like organizing, entering, modifying, and presenting data. It also defines the various data types that can be used in an MS Access database like text, number, date/time, and yes/no fields. Finally, it lists the main components of an MS Access database as tables, queries, forms, and reports.
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This document provides an introduction to the C programming language. It discusses that C was designed by Dennis Ritchie in 1972 and is a structured programming language used to design different applications. It also outlines the basic structure of a C program, including the main components like preprocessor directives, header files, variable declarations, comments, and functions. Additionally, it defines common programming concepts in C like tokens, data types, operators, and input/output functions.
Osi model
The OSI model was developed in 1984 by ISO to standardize communication between networks. It divides the communication process into seven layers: physical, data link, network, transport, session, presentation, and application. The physical layer establishes a connection between devices, the data link layer converts messages into bits and vice versa, and the network layer translates data into physical addresses and breaks data into smaller units.
Network topology
The document discusses different types of local area network (LAN) topologies, including bus, star, ring, mesh, and tree. It provides descriptions of each topology's structure and connections between computers. Advantages listed for some topologies include easier installation and fault correction, while disadvantages include higher costs and potential for full network failure if a connection is lost.
Networks
This document discusses network concepts and wireless technologies. It defines a network as a group of computers connected to each other that allows sharing of resources. The main advantages of networks are easy communication even from different locations, sharing of files and resources, and reduced costs. It also describes different wireless technologies like Bluetooth and WiFi. WiFi provides high-speed internet access and allows mobile phones to connect to each other. The key benefits of WiFi include sharing internet access, resources, listening to music, live streaming video, and printing/scanning.
Qbasic
This document discusses various programming concepts in QBASIC including control statements, loops, arrays, and library functions. Control statements like IF-THEN, IF-THEN-ELSE, and IF-THEN-ELSEIF are used to control program flow based on conditions. Common loops in QBASIC include FOR-NEXT loops, DO WHILE loops, and WHILE-WEND loops. Arrays allow storing and accessing multiple values of the same type. One-dimensional and two-dimensional arrays are covered. Finally, common library functions LEFT$, RIGHT$, and MID$ are introduced for extracting portions of string values.
Webconcepts
This document discusses email and how to attach files to emails. It defines email as electronic mail that is used to send and receive messages over the Internet. It outlines some key advantages of email like ease of use, speed, and ability to send photos and files. It then provides step-by-step instructions for attaching a file to an email in Gmail, which includes opening a browser, signing into Gmail, clicking attachments, selecting the file, and sending the email.
Network concepts
This document discusses networking concepts and components. It defines a network as a group of connected computers that allows sharing of resources between users. The main types of networks are public networks like the Internet and private networks like intranets. Key network components include clients, servers, cables, network interface cards, hubs and switches. Different types of networks include PAN, LAN, CAN, MAN and WAN. Network protocols like IP, TCP and HTTP are sets of rules for transmitting data between computers.
Wordpad
WordPad is a basic text editing program used to type documents on a computer. It can be opened by clicking on Start and then All Programs and Accessories. Users type text in the typing area where the blinking cursor is located. To save a file for future use, users click the save icon and name the file in the filename text box before clicking save. Files are exited by clicking the close button in the WordPad window.
Computer basics
The document provides an overview of computer basics. It discusses that a computer is an electronic device that takes in input, processes data, and provides output. The father of computers was Charles Babbage and the mother was Ada Lovelace. Computers work with electricity and can recognize the presence and absence of power. They are used in many fields like offices, schools, banks, hospitals and more. Computers have advantages like speed, accuracy, consistency, storage and versatility. The document also discusses computer hardware, software, programming languages, and storage devices like hard disks, floppy disks, CDs and DVDs.
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- 1. VII CLASS CHAPTER---->3 3. WORKING WITH MS-ACCESS
- 2. WHAT IS DATABASE? THE DATABASE IS A COLLECTION OF DATA WHAT IS DBMS ? • DBMS----> DATABASE MANAGEMENT SYSTEM. • THE DBMS IS A COLLECTION OF SIMILAR DATA. • THE DBMS IS MAINLY USED TO STORE & RETRIVE DATA FROM DATABASE.
- 3. DBMS APPLICATIONS: • DB IN BANK : ALL TRANSACTIONS ACCOUNTS. • DB IN SCHOOL & COLLEGES : STUDENT DETAILS. • DB IN LIBRARY : INFORMATION ABOUT BOOKS. • DB IN HUMAN RESOURCE : EMPLOYEE DETAILS, THEIR SALARIES.
- 4. FUNCTIONS OF DBMS : • CONCURENCY : THE DBMS ALLOWS MULTIPLE USERS TO ACCESSS DATABASE. • SECURITY : DBMS INCREASES SECURITY & RELIABILITY. • BACKUP & RECOVER : DBMS IS USED TO BACKUP THE DATA & RECOVERS IF A PROBLEM OCCURS.
- 5. POPULAR DBMS : 1) ORACLE 2) MS-ACCESS 3) MS-SQL SERVER 4) CLIPPER 5) FOXPRO
- 6. WHAT IS MS-ACCESS ? MS-ACCESS IS A RDBMS WHICH STORES INFO IN MULTIPLE TABLES • MS-ACCESS TASKS : 1) WE CAN ORGANIZE THE DATA 2) WE CAN ENTER,MODIFY THE DATA 3) WE CAN CREATE FORMS & REPORTS 4) WE CAN ADD CLIPART, GRAPHS.
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