Sqlplus books pdf free download

Search Results for: oracle sql plus the definitive guide Home Search Results For " oracle sql plus the definitive guide ". This bestselling book--now updated for Oracle 10g--is the only in-depth guide to this interactive query tool for writing SQL scripts.

It's an essential resource for any Oracle user. With Oracle SQLPlus: The Definitive Guide, you'll expertly: write and execute script files generate ad hoc reports extract data from the database query the data dictionary tables customize an SQLPlus environment and much more It also includes a handy quick reference to all of its syntax options and an often-requested chapter on SQL itself, along with a clear, concise, and complete introduction.

This book is truly the definitive guide to SQLPlus. If you want to leverage the full power and flexibility of this popular Oracle tool, you'll need this book. As Oracle's long-standing interactive query tool, SQLPlus is available at every Oracle site, from the largest data warehouse to the smallest single-user system.

Despite its wide use, however, SQLPlus is still often not completely understood or fully utilized. Author Jonathan Gennick is an editor for O'Reilly specializing in database and programming titles, having amassed some 17 years of programming and database management experience. It's used to create and maintain database objects, place data into those objects, query the data, modify the data, and, finally, delete data that is no longer needed. Databases lie at the heart of many, if not most business applications.

Chances are very good that if you're involved with software development, you're using SQL to some degree. And if you're using SQL, you should own a good reference or two. Now available in an updated second edition, our very popular SQL Pocket Guide is a major help to programmers, database administrators, and everyone who uses SQL in their day-to-day work.

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You may copy and print this document solely for your own use in an Oracle training course. The document may not be modified or altered in any way. Except where your use constitutes "fair use" under copyright law, you Technical Contributors may not use, share, download, upload, copy, print, display, perform, reproduce, publish, license, post, transmit, or distribute this document in whole or in part without and Reviewers the express authorization of Oracle. Diganta Choudhury The information contained in this document is subject to change without notice.

This document is not Kimseong Loh warranted to be error-free. Government contract. Other names y may be trademarks of their respective owners. In this class, you l learn the basic concepts of relational databases and the powerful SQL programming c r a language.

This course provides the essential SQL skills that enable you to write queries against single and multiple tables, manipulate data in tables, create database objects, and query metadata. Oracle Database 11g O ly consolidates and extends the benefits of grid computing. Oracle provides content management of t U advanced data types such as Extensible Markup Language XML , text, spatial, I n multimedia, medical imaging, and semantic technologies.

The database systems must be c r a reliable and must be able to recover quickly in the event of any kind of failure. These features improve online operations and enable faster c l e database upgrades.

Oracle Database 11g enables organizations to manage large, scalable, transactional, and data warehousing systems that deliver fast data access using low-cost modular storage. It delivers a secure and scalable platform for reliable and fast access to all types of information by using the industry-standard interfaces. It also supports advanced information life-cycle management capabilities. This helps you manage the changing data in your database.

SOA facilitates the development of modular business services that can be easily integrated and reused, thereby reducing development and maintenance costs, and O ly providing higher quality of services. It has simplified patch management with synchronized patching, additional operating system support, and conflict detection features. Oracle BI Publisher offers l the most efficient and scalable reporting solution available for complex, distributed c environments.

By using a set of familiar desktop tools, users can create and maintain their own report formats based on data queries created by the IT staff or developers. Oracle BI Publisher also enables you to bring in data from multiple data sources into a single output document.

You can deliver reports via U I n printer, email, or fax. You can publish your report to a portal. You can even allow users to collaboratively edit and manage reports on the Web-based Distributed Authoring and c l e Versioning WebDav Web servers.

Data warehouse applications benefit from enhancements such as a e parallel execution of insert, update, and delete operations; partitioning; and parallel-aware n t e r are distributed and multitiered. U s query optimization. A library keeps a list of members, books, l due dates, and fines.

A company needs to save information about its employees, c r a departments, and salaries. These pieces of information are called data. Organizations can store data in various media and in different formats, such as a hard copy O ly document in a filing cabinet, or data stored in electronic spreadsheets, or in databases.

To manage databases, you need a database management system DBMS. A DBMS is a n a e program that stores, retrieves, and modifies data in databases on request. There are four relational. Codd proposed the relational model for database systems in In this paper, Dr. Codd c r a proposed the relational model for database systems. The common models used at that time were hierarchical and network, or even simple flat-file O ly data structures.

In addition, a number of innovative vendors, such as Oracle, supplemented the RDBMS with a suite of powerful, a e application development and user-interface products, thereby providing a total solution.

A c l For example, you might want to store information about all the employees in your company. In r a a relational database, you create several tables to store different pieces of information about your employees, such as an employee table, a department table, and a salary table.

Engineers build a model of a car to work out any A l details before putting it into production. In the same manner, system designers develop c Purpose of Models r a models to explore ideas and improve the understanding of database design. Assign one or more employees to a department. Some departments do not yet have assigned employees. An entityA l relationship ER model is an illustration of the various entities in a business and the c r a relationships among them.

An ER model is derived from business specifications or narratives and built during the analysis phase of the system development life cycle. ER models separate O ly the information required by a business from the activities performed within the business.

Therefore, the data structures also tend to be constant. Examples are departments, employees, and orders. For example, for the employee entity, the attributes would be the employee number, name, job title, hire date, department number, and so on. Each of the attributes is either required or optional. This state is called optionality. Examples are employees and departments, and orders and items. Note: The convention is to read clockwise. Unique Identifiers A unique identifier UID is any combination of attributes or relationships, or both, that serves to distinguish occurrences of an entity.

Each entity occurrence must be uniquely identifiable. Categories of data are listed across the top of c r a each table, and individual cases are listed below. By using a table format, you can readily visualize, understand, and use information.

For example, you may want to know the location of the department where an employee works. With an RDBMS, you can relate the e r s data in one table to the data in another by using the foreign keys. A foreign key is a column t U or a set of columns that refers to a primary key in the same table or another table.

I n You can use the ability to relate data in one table to data in another to organize information in c l e separate, manageable units. Employee data can be kept logically distinct from the department data by storing it in a separate table.

A table holds all the data necessary about something in the real world, such as c employees, invoices, or customers. A single row or tuple representing all the data required for a particular employee. Each row in a table should be identified by a primary key, which permits no duplicate rows.

A column or attribute containing the employee number. In this example, the employee number U I n column is designated as the primary key. A primary key must contain a value and the value must be unique. A column that is not a key value. A column represents one kind of data in a table; in this c example, the data is the salaries of all the employees. Column order is insignificant r a when storing data; specify the column order when the data is retrieved.

A column containing the department number, which is also a foreign key. A foreign key is a column that defines how tables relate to each other. A foreign key refers to a primary key or a unique key in the same table or in another table. A field can be found at the intersection of a row and a column. There can be only one value in it.

A field may have no value in it. This is called a null value. Oracle Corporation r a ensures future compliance with evolving standards by actively involving key personnel in SQL standards committees. SQL Developer version 3. Some r aemployees may not be assigned to any department. If an employee changes departments within a job or changes jobs within a department, a new row is inserted into this table with the earlier job information of the employee.

They are A l managed by operations and governed by data integrity constraints. SQL is the c l e language that is used to communicate with the server to access, manipulate, and control data. The ora1 account contains the HR schema tables. Perform the practices slowly and precisely. You can experiment with saving and running l e command files. If you have any questions at any time, ask your instructor. However, A l you may need to restrict the columns that are displayed. Selects a few or as many of the columns as required.

The table contains eight rows, one for each department. The output displayed on the Results tabbed page appears as shown in the slide.

Semicolons are required when you execute multiple SQL statements. You can override the column heading display with an alias. Column aliases are covered later in this lesson. All these are possible using arithmetic expressions. If operators in an expression are of the same priority, evaluation is done from left to right. Note that multiplication is performed before addition. Note: Use parentheses to reinforce the standard order of precedence and to improve clarity.

The second example in the slide displays the last name, salary, and annual compensation of I n employees. Because of the parentheses, l e addition takes priority over multiplication. Null is not the same as zero or a blank space. Zero is a number and blank space is a character. O ly Columns of any data type can contain nulls.

Other employees are not entitled to earn t e r U s commissions. A null represents that fact. However, you I n can set it to something more relevant to you. To do so, select Preferences from the Tools menu. In the Preferences dialog box, expand the Database node. For example, if you l attempt to perform division by zero, you get an error. However, if you divide a number by null, c the result is a null or unknown. This heading may not be descriptive and, therefore, may be c r a difficult to understand.

You can change a column heading by using a column alias. By O ly default, alias headings appear in uppercase. The result of c r a the query is the same whether the AS keyword is used or not. Also, note that the SQL statement has the column aliases, name and comm, in lowercase, whereas the result of the O ly query displays the column headings in uppercase.

As mentioned in the preceding slide, column headings appear in uppercase by default. Remove any other Oracle directories. For Set Oracle globalization variables required for your locale. A default locale will be assumed if no variables are set. For example:. The environment may be configured using SET commands in a Windows command prompt or made permanent by setting Environment Variables in System Properties.

For example, to set environment variables in Windows using System Properties, open System from the Control Panel, click the Advanced tab and then click Environment Variables.