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What are the Oracle index types?

Oracle index types include: 1. B-Tree index; 2. Bitmap index; 3. Function index; 4. Hash index; 5. Reverse key index; 6. Local index; 7. Global index; 8. Domain index ; 9. Bitmap connection index; 10. Composite index. This topic provides you with relevant articles, downloads, and course content for you to download and experience for free.

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What are the Oracle index types?

Oracle index types include: 1. B-Tree index; 2. Bitmap index; 3. Function index; 4. Hash index; 5. Reverse key index; 6. Local index; 7. Global index; 8. Domain index ; 9. Bitmap connection index; 10. Composite index. Detailed introduction: 1. B-Tree index is a self-balancing tree data structure that can efficiently support concurrent operations. In Oracle database, B-Tree index is the most commonly used index type; 2. Bit Graph index is an index type based on bitmap algorithm and so on.

Nov 16, 2023 am 09:59 AM

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How to use declare in Oracle

The DECLARE statement is a keyword used in Oracle to declare variables, constants and cursors. Provides a convenient way to define and initialize data objects for use in PL/SQL blocks. By using the DECLARE statement, PL/SQL code can be made more modular and readable.

Sep 19, 2023 am 09:44 AM

oracle declare

Technical comparison of Oracle database and MySQL: who is better?

Technical comparison of Oracle database and MySQL: who is better? With the rapid development of technology, databases have become an important part of modern application development. In actual development, developers often need to choose an appropriate database system based on specific needs. As two common relational database systems, Oracle database and MySQL differ in terms of performance, scalability, functions, and cost. So, which one is better? This article will conduct a detailed technical comparison in order to provide an objective

Sep 09, 2023 am 08:25 AM

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How to view the operation history of an Oracle database

Methods to view operation history: 1. Use Oracle's built-in audit function to record various operations that occur in the database, including logins, DDL statements, DML statements, etc.; 2. Use Oracle log files, which contain operations that occur in the database. For various operations, you can obtain the operation history by viewing log files; 3. Use Oracle's Flashback function to view the operation history of the database at a certain point in time; 4. Use third-party tools, etc.

Sep 19, 2023 am 11:13 AM

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Oracle announces extension of long-term support for Java 11 until 2032, with Java 21 leading future trends

According to news on September 20, yesterday evening, Oracle officially released a new Java21 version and the corresponding JDK21 development tool kit. This version is declared as the latest long-term support (LTS) version since JDK17 and will provide full support for at least 8 years. Java has long been the language and platform of choice for developing robust, scalable and secure applications, used by organizations and millions of developers around the world. Georges Saab, senior vice president of Oracle Java Platform and chairman of OpenJDK, said that Java 21 introduces many powerful features that are expected to allow developers to build excellent applications more efficiently. In addition, Oracle also announced that it will extend the long-term support for Java 11, which was released five years ago.

Sep 22, 2023 pm 12:17 PM