Data manipulation statements

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  • This lesson covers more advanced features of the SELECT statement. You can write subqueries in the WHERE clause of another SQL statement to obtain values based on an unknown conditional value. At the end of this lesson, you should be able to  Write nested subqueries to query data based on unknown criteria.  Use subqueries in data manipulation statements.  Order data with subqueries.

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  • The Oracle OLAP DML Reference provides a complete description of the OLAP Data Manipulation Language (OLAP DML) used to define and manipulate analytic workspace objects. Part I briefly describes how to use the OLAP DML. Part II consists of a reference topic for each of the OLAP DML statements. This manual is intended for programmers and database administrators who create and modify analytic workspaces and analytic workspace objects using the OLAP DML

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  • Purpose and importance of SQL, the main language for querying relational databases. How to retrieve data using the SELECT statement. How to insert data using the INSERT statement. How to update data using the UPDATE statement. How to delete data using the DELETE statement. About an alternative language for querying relational databases called QBE.

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  • In this chapter, you will: Learn how to create and manipulate your own simple data type—called the enumeration type; become familiar with the typedef statement; learn about the namespace mechanism; explore the string data type, and learn how to use the various string functions to manipulate strings.

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  • A key feature of procedural programming is the ability to create and debug code quickly and easily. Procedure Builder provides all of the functionality necessary for you to successfully develop and debug PL/SQL programs. This lesson enables you to manipulate PL/SQL code using Procedure Builder. At the end of this lesson, you should be able to  Identify the advantages of developing and debugging PL/SQL programs in Procedure Builder.  Manage program units by using the Object Navigator.  Execute program units and SQL statements by using the PL/SQL Interpreter.

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  • This module provides students with an understanding of how to insert XML data into SQL Server tables by using the OPENXML statement. After completing this module, students will be able to: Use the OPENXML statement to create a rowset from a single-level Extensible Markup Language (XML) document. Use the OPENXML statement to process rowsets from complex XML documents. Retrieve attributes, elements, or both from an XML document by specifying the appropriate flags parameter with the OPENXML statement.

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  • The ability to work with sets is critical both to retrieving data from an online analytical processing (OLAP) cube in a multidimensional expression (MDX) query statement and creating powerful MDX expressions. In this module, students will be introduced to functions that return sets of members. Some of the functions retrieve sets from the metadata defined in the cube’s dimensions. Some of the functions manipulate those sets to create new sets that meet specific analytical purposes.

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  • In the 1970s, IBM developed a product called SEQUEL, or Structured English Query Language, which ultimately became SQL, the Structured Query Language. IBM, along with other relational database vendors, wanted a standardized method for accessing and manipulating data in a relational database. Over the decades, many competing languages have allowed programmers and developers to access and manipulate data. However, few have been as easy to learn and as universally accepted as SQL.

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  • The Oracle Call Interface (OCI) is an application programming interface (API) that allows applications written in C or C++ to interact with one or more Oracle database servers. OCI gives your programs the capability to perform the full range of database operations that are possible with an Oracle database server, including SQL statement processing and object manipulation.

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  • Contents at a Glance Foreword Preface Acknowledgements 1 Introduction to Oracle SQL 2 New Features of Oracle SQL 3 Oracle Database Architecture 4 The SELECT Statement 5 Filtering Rows 6 Sorting Rows 7 Operators, Conditions, and Pseudocolumns 8 Using SQL*Plus 9 Single-Row Functions 10 Joining Tables 11 Grouping and Summarizing Data 12 Subqueries 13 Unusual Query Types 14 Expressions 15 Data Manipulation Language (DML) 1

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  • A primary concern of a multiuser database management system is how to control concurrency, which is the simultaneous access of the same data by many users. Without adequate concurrency controls, data could be updated or changed improperly, compromising data integrity. One way to manage data concurrency is to make each user wait for a turn. The goal of a database management system is to reduce that wait so it is either nonexistent or negligible to each user.

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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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  • Chapter 10 - Application development with views. This chapter shows you how to apply your query formulation skills to building applications with views. This chapter also emphasizes views as the foundation for building database applications. Before discussing the link between views and database applications, essential background is provided. You will learn the motivation for views, the CREATE VIEW statement, and usage of views in SELECT and data manipulation (INSERT, UPDATE, and DELETE) statements.

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  • Introduction to Oracle9i: SQL consists of two modules, SQL1 and Extended Data Retrieval with SQL. SQL1 covers creating database structures and storing, retrieving, and manipulating data in a relational database. Extended Data Retrieval with SQL covers advanced SELECT statements, Oracle SQL, and iSQL*Plus Reporting. For people who have worked with other relational databases and have knowledge of SQL, another course, called Introduction to Oracle9i for Experienced SQL Users is offered. This course covers the SQL statements that are not part of ANSI SQL but are specific to Oracle.

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  • Functions make the basic query block more powerful and are used to manipulate data values. This is the first of two lessons that explore functions. You will focus on single row character, number, and date functions, as well as those functions that convert data from one type to another, for example, character data to numeric. At the end of this lesson, you should be able to  Explain the various types of functions available in SQL.  Identify the basic concepts of using functions.  Use a variety of character, number, and date functions in SELECT statements.

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  • Oracle SQL Developer is a graphical tool that lets you browse, create, edit, and delete (drop) database objects, edit and debug PL/SQL code, run SQL statements and scripts, manipulate and export data, and create and view reports. With SQL Developer, you can connect to any target Oracle Database schema using standard Oracle Database authentication. Once connected, you can perform operations on objects in the database.

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  • After reading the material in this chapter, you should be able to: What arrays are; to use arrays to store data in and retrieve data from lists and tables of values; to declare an array, initialize an array and refer to individual elements of an array; to use the enhanced for statement to iterate through arrays; to pass arrays to methods; to declare and manipulate multidimensional arrays;...

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  • In chapter 7 you will learn: What arrays are, to use arrays to store data in and retrieve data from lists and tables of values, to declare an array, initialize an array and refer to individual elements of an array, to use the enhanced for statement to iterate through arrays, to pass arrays to methods, to declare and manipulate multidimensional arrays, to write methods that use variable-length argument lists.

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