• Lecture Computer graphics - Lecture 28

    Lecture Computer graphics - Lecture 28

    After you read this chapter you should be able to: Discuss the importance of project management, feasibility assessment, documentation, and data and information gathering techniques; discuss the purpose of each system development phase; differentiate between lowlevel languages and procedural languages;...

     14 p tgu 24/02/2024 5 0

  • Lecture Computer graphics - Lecture 29

    Lecture Computer graphics - Lecture 29

    After you read this chapter you should be able to: Describe various types of network attacks, and identify ways to safeguard against these attacks, including firewalls and intrusion detection software; discuss techniques to prevent unauthorized computer access and use; identify safeguards against hardware theft and vandalism;...

     16 p tgu 24/02/2024 8 0

  • Lecture Computer graphics - Lecture 30

    Lecture Computer graphics - Lecture 30

    After you read chapter 8 you should be able to: Discuss the purpose of the components required for successful communications; describe these uses of computer communications: wireless messaging services, wireless Internet access points, cybercafés, global positioning systems, collaboration, groupware, voice mail, and Web services; differentiate among types of networks: LANs, MANs, and WANs;...

     20 p tgu 24/02/2024 6 0

  • Lecture Database system concepts (6/e): Chapter 8 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 8 - Silberschatz, Korth, Sudarshan

    Chapter 8 - Relational database design. This chapter introduces the theory of relational database design. The theory of functional dependencies and normalization is covered, with emphasis on the motivation and intuitive understanding of each normal form. This chapter begins with an overview of relational design and relies on an intuitive understanding of logical implication of functional dependencies.

     92 p tgu 24/02/2024 8 0

  • Lecture Database system concepts (6/e): Chapter 2 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 2 - Silberschatz, Korth, Sudarshan

    Chapter 2 - Intro to relational model. Chapter 2 introduces the relational model of data, covering basic concepts such as the structure of relational databases, database schemas, keys, schema diagrams, relational query languages, and relational operations.

     30 p tgu 24/02/2024 7 0

  • Lecture Database system concepts (6/e): Chapter 5 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 5 - Silberschatz, Korth, Sudarshan

    Chapter 5 - Advanced SQL. In this chapter, we cover some of the more advanced features of SQL. We address the issue of how to access SQL from a general-purpose programming language, which is very important for building applications that use a database to store and retrieve data.

     83 p tgu 24/02/2024 6 0

  • Lecture Database system concepts (6/e): Chapter 7 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 7 - Silberschatz, Korth, Sudarshan

    Chapter 7 - Entity-relationship model. This chapter provides an overview of the database-design process, with major emphasis on database design using the entity-relationship data model. The entity-relationship data model provides a high-level view of the issues in database design, and of the problems that we encounter in capturing the semantics of realistic applications within the constraints of a data model. UML class-diagram notation is also...

     102 p tgu 24/02/2024 8 0

  • Lecture Database system concepts (6/e): Chapter 6 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 6 - Silberschatz, Korth, Sudarshan

    Chapter 6 - Formal relational query languages. In this chapter, we start by presenting the relational algebra, which forms the basis of the widely used SQL query language. We then cover the tuple relational calculus and the domain relational calculus, which are declarative query languages based on mathematical logic.

     88 p tgu 24/02/2024 8 0

  • Lecture Database system concepts (6/e): Chapter 1 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 1 - Silberschatz, Korth, Sudarshan

    Chapter 1: Introduction. Chapter 1 provides a general overview of the nature and purpose of database systems. We explain how the concept of a database system has developed, what the common features of database systems are, what a database system does for the user, and how a database system interfaces with operating systems.

     24 p tgu 24/02/2024 4 0

  • Lecture Database system concepts (6/e): Chapter 3 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 3 - Silberschatz, Korth, Sudarshan

    Chapter 3 introduction to SQL. This chapter presents the following content: Data definition, basic query structure, set operations, aggregate functions, null values, nested subqueries, complex queries, views, modification of the database.

     78 p tgu 24/02/2024 6 0

  • Lecture Database system concepts (6/e): Chapter 4 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 4 - Silberschatz, Korth, Sudarshan

    Chapter 4 - Intermediate SQL. In this chapter, we continue our study of SQL. We consider more complex forms of SQL queries, view definition, transactions, integrity constraints, more details regarding SQL data definition, and authorization.

     52 p tgu 24/02/2024 7 0

  • Lecture Database system concepts (6/e): Chapter 9 - Silberschatz, Korth, Sudarshan

    Lecture Database system concepts (6/e): Chapter 9 - Silberschatz, Korth, Sudarshan

    Chapter 9 - Application design and development. Chapter 9 covers application design and development. This chapter emphasizes the construction of database applications with Web-based interfaces. In addition, the chapter covers application security.

     61 p tgu 24/02/2024 5 0

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