The document explains Oracle's Data Manipulation Language (DML) statements, which include insert, update, merge, and delete operations to manage data in databases. It discusses the concept of transactions, emphasizing their atomic nature and the significance of commit and rollback statements. Additionally, it highlights the difference between delete and truncate commands, particularly regarding how they affect the high water mark in database storage.
This document provides an overview of Oracle SQL functions. It discusses single-row functions that operate on each row returned, including conversion, character, number, and date functions. Character functions covered include LOWER, UPPER, INITCAP, CONCAT, SUBSTR, LENGTH, and INSTR, which can be used for case conversion and character manipulation.
The document provides an overview of SQL basics, including its three sublanguages: DDL for data declaration, DML for data manipulation, and DCL for data control. It describes each sublanguage and some key SQL concepts like tables representing entities, relationships represented through references between tables, and the differences between rows and records and columns and fields. It also briefly introduces schema objects that can be created by users with admin privileges in a database.
This document discusses SQL and Oracle database concepts. It provides definitions of SQL, Oracle, and key Oracle data types. It also summarizes Oracle's object-relational capabilities and explains how to perform common data definition language (DDL) tasks like creating tables, adding constraints, and altering table structures in 3 sentences or less.
Chapter 9 discusses creating and managing tables in an Oracle database, outlining structures such as tables, views, sequences, and indexes, and their roles in data storage and performance. It provides guidelines for naming conventions, privileges required for table creation, and the use of data dictionary views for managing information within the database. The chapter also details the `ALTER`, `DROP`, and `TRUNCATE` operations for modifying tables and emphasizes key considerations like default values and space allocation.
Dokumen ini menjelaskan tentang Data Definition Language (DDL) yang digunakan untuk mendefinisikan struktur dan atribut dalam basis data. Terdapat perintah-perintah penting seperti CREATE, ALTER, dan DROP untuk membuat, mengubah, dan menghapus database atau tabel. Juga diuraikan tentang cara memilih dan melampirkan database serta struktur tabel yang diperlukan.
This document provides links to documentation on NumPy support in Numba and an article in Japanese about optimizing NumPy code when using Numba. Numba is a Python compiler that can accelerate NumPy code by compiling Python code with NumPy operations into fast machine code. The documentation and article discuss which NumPy functions and operations are supported in Numba and how to write NumPy code in a way that allows Numba to optimize and accelerate it.
Sentiment Polarity Analysis for Generating Search Result Snippets based on Pa...Yujiro Terazawa
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I and the laboratory I belong proposed and implemented a method for extracting reputation sentences from search result snippets based on a given search query in the search engine google. This video introcudes my archivement in Proc. of 4th International Congress on Advanced Applied Informatics 2015.
This document provides links to documentation on NumPy support in Numba and an article in Japanese about optimizing NumPy code when using Numba. Numba is a Python compiler that can accelerate NumPy code by compiling Python code with NumPy operations into fast machine code. The documentation and article discuss which NumPy functions and operations are supported in Numba and how to write NumPy code in a way that allows Numba to optimize and accelerate it.
Sentiment Polarity Analysis for Generating Search Result Snippets based on Pa...Yujiro Terazawa
?
I and the laboratory I belong proposed and implemented a method for extracting reputation sentences from search result snippets based on a given search query in the search engine google. This video introcudes my archivement in Proc. of 4th International Congress on Advanced Applied Informatics 2015.