Creating a table

Bài giảng Phát triển ứng dụng Web: Bài 3 PHP Database cung cấp cho người học những kiến thức như: PHP MySQL Introduction; PHP MySQL Connect to a Database; PHP MySQL Create Database and Tables; PHP MySQL Insert Into; PHP MySQL Select; PHP MySQL The Where Clause; PHP MySQL Order By Keyword; PHP MySQL Update; PHP MySQL Delete; MySQL và Font Unicode; MySQLi.

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This workshop covers: Creating tables and sequences Modifying data in the tables Modifying table definitions Creating views Writing scripts containing SQL and iSQL*Plus commands Generating a simple report

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Built-In Database Objects In addition to creating the database files, several other structures are created. Data dictionary: Contains descriptions of the objects in the database Dynamic performance tables: Contains information used by the database administrator (DBA) to monitor and tune the database and instance PL/SQL packages: Program units adding functionality to the database. These packages are created when the catproc.sql script is run after the CREATE DATABASE command. PL/SQL packages will not be discussed within the scope of this course.

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6,7 tạo một bàn mới với dữ liệu từ hiện tại Bàn tôi thường cần để tạo bảng mới từ dữ liệu hiện có. Nếu bảng đã tồn tại, tôi cần phải xóa bảng cũ đầu tiên.

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[ Team LiB ] Recipe 7.6 Synchronizing Master-Detail Web Forms DataGrids Problem You need to create a master-detail pair of DataGrid controls and synchronize them so that when you select a record in the master, the child grid is updated with the corresponding records. Solution Fill a DataSet with results from both tables

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[ Team LiB ] Recipe 10.15 Creating a Table in the Database from a DataTable Schema Problem You need to create a table in a database from an existing DataTable schema. Solution Use the CreateTableFromSchema( ) method shown in this solution.

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[ Team LiB ] Recipe 10.8 Adding Tables to a Database Problem You need to add a table to an existing database. Solution Use the CREATE TABLE statement. The sample code executes the DDL statement—using the ExecuteNonQuery( ) method of the Command object—to add a table to an existing SQL Server database.

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[ Team LiB ] Recipe 6.8 Creating Constraints, PrimaryKeys, Relationships Based on Multiple Columns Problem You need to create a constraint, primary key, or a relationship between two tables in a DataSet using more than one column. Solution Use the System.Data.

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[ Team LiB ] Recipe 3.6 Combining Data in Tables from Heterogeneous Data Sources Problem You want to create a report that is based on data from tables in more than one data source. Solution Use ad-hoc connector names in SQL statements.

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[ Team LiB ] Recipe 3.9 Finding Rows in a DataView Problem You need to find a row or group of rows in a DataView meeting certain criteria. Solution Use a sorted DataView to find rows using columns that are not part of the primary key. The sample code contains two event handlers: Form.Load Sets up the sample by creating a DataTable containing the Orders table from the Northwind database. A DataView of the table sorted by the CustomerID and EmployeeID is created. Find Button.Click Uses the FindRows( ) method of the DataView to retrieve the array of DataRowView objects...

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Figure 6.23: Creating a relationship between two tables Note Remember: You're unselecting these columns, so you uncheck the columns for the Orders table

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Using the Data Form Wizard to Create a Windows Form In this section, you'll use the VS .NET Data Form Wizard to create a Windows application that accesses both the Customers and Orders tables.

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Modifying Data Using a Strongly Typed DataSet In Chapter 10, you saw how to create and use a strongly typed DataSet class named MyDataSet. You can use objects of this class to represent the Customers table and rows from that table

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Creating and Using a DataRelation Object In this section, you'll learn how to create a DataRelation object to define a relationship between two DataTable objects that hold some rows from the Customers and Orders tables

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Creating a Table You can use Enterprise Manager to add a table to a database. In this section, you'll add a table to the Northwind database to store the details of a person

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