Basic query structure

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.

96p haojiubujain04 27-07-2023 12 4   Download

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.

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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.

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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.

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Ebook Fundamentals of database systems (Seventh edition): Part 2 presents the following content: Relational Database Design Algorithms and Further Dependencies; Disk Storage, Basic File Structures, Hashing, and Modern Storage Architectures; Indexing Structures for Files and Physical Database Design;...Please refer to the documentation for more details.

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Web technologies and e-services: Lecture 4.1 provide students with knowledge about: what is SQL; how to access mySQL database; how to create a basic mySQL database; how to use some basic queries; how to use PHP and mySQL;... Please refer to the content of document.

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This topic will describe: The concrete data structures that can be used to store information, the basic forms of memory allocation, the prototypical examples of these: arrays and linked lists, other data structures, finally we will discuss the run-time of queries and operations on arrays and linked lists.

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Chapter 4 - Relational databases and enterprise systems. In this chapter students will be able to: Describe the advantages of relational databases, explain basic relational database principles, describe how to query using Structured Query Language (SQL), understand the purpose and basic framework for an enterprise system, assess how cloud computing facilitates enterprise systems.

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Chapter 3 - Structured Query Language. After completing this unit, you should be able to: Learn basic SQL statements for creating database structures, learn SQL statements to add data to a database, learn basic SQL SELECT statements and options for processing a single table, learn basic SQL SELECT statements for processing multiple tables with subqueries,...

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This topic will describe: The concrete data structures that can be used to store information, the basic forms of memory allocation, the prototypical examples of these: arrays and linked lists, other data structures, finally we will discuss the run-time of queries and operations on arrays and linked lists.

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The ANSI standard Structured Query Language (SQL) provides basic functions for data manipulation, transaction control, and record retrieval from the database. How- ever, most end users interact with Oracle through applications that provide an inter- face that hides the underlying SQL and its complexity. PL/SQL Oracle’s PL/SQL, a procedural language extension to SQL, is commonly used to implement program logic modules for applications. PL/SQL can be used to build stored procedures and triggers, looping controls, conditional statements, and error handling.

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Contents Acknowledgments Introduction Chapter 1: RDBMS Basics: What Makes Up a SQL Server Database? Chapter 2: Tools of the Trade Chapter 3: The Foundation Statements of T-SQL Chapter 4: JOINs Chapter 5: Creating and Altering Tables Chapter 6: Constraints Chapter 7: Adding More to Our Queries Chapter 8: Being Normal: Normalization and Other Basic Design Issues Chapter 9: SQL Server Storage and Index Structures Chapter

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This reference describes Oracle XML Developer's Kits (XDK) and Oracle XML DB APIs. It primarily lists the syntax of functions, methods, and procedures associated with these APIs.This guide is intended for developers building XML applications in Oracle. To use this document, you need a basic understanding of object-oriented programming concepts, familiarity with Structured Query Language (SQL), and working knowledge of application development using either C or C++.

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SQL là viết tắt của Structure Query Language, nó là một công cụ quản lý dữ liệu được sử dụng phổ biến ở nhiều lĩnh vực. Hầu hết các ngôn ngữ bậc cao đều có trình hỗ trợ SQL như Visual Basic,Oracle,Visual C... Trong Oracle tất cả các chương trình và người sử dụng phải sử dụng SQL để truy nhập vào dữ liệu trong CSDL của Oracle. Các chương trình ứng dụng và các công cụ Oracle cho phép người sử dụng truy nhập tới CSDL mà không cần sử dụng trực tiếp SQL. Nhưng những ứng dụng đó khi......

46p quocminh 02-03-2009 1605 430   Download