describing and analysing tables and charts

Ngày tải lên: 31/03/2014, 16:23

Ngày tải lên: 04/10/2012, 10:02

Ngày tải lên: 04/09/2013, 15:20

Ngày tải lên: 25/10/2013, 07:20

... won't create tables; you will create the tables for the users, and they will fill the data into the tables using your applications. When the user fills in the data, the application and SQL Server ... of the data is and what the allowed length is. The Allow Nulls property determines whether the user even has to enter data. Comments Creating the tables, made up of columns and rows, is the ... a successful database. Plan out your tables ahead of time, examining each real-world object, and transfer those properties to the columns that make up the tables that represent your objects....

Ngày tải lên: 28/10/2013, 19:15

... None Altering Tables and Constraints 12Ć19 Renaming and Truncating a Table Additional DDL commands include the RENAME command, which is used to rename a table, view, sequence, or synonym, and the TRUNCATE ... drop constraints, and enable or disable constraints by using this command. If you want to remove a table, both the rows and the data structure of a table, invoke the DROP TABLE command. Other commands that ... them. Introduction to Oracle: SQL and PL/SQL Using Procedure Builder12Ć28 Altering Tables and Constraints 12Ć23 Summary Data definition commands (DDL) allow you to create, modify, remove, and rename objects....

Ngày tải lên: 10/12/2013, 16:16

... statement to populate a DataSet object named myDataSet: SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); mySqlCommand.CommandText = "SELECT CustomerID AS MyCustomer, CompanyName, ... CustomerID = ALFKI CompanyName = Alfreds Futterkiste Address = Obere Str. 57 Mapping Tables and Columns In Chapter 3 , "Introduction to Structured Query Language (SQL)," you ... TableName property of the DataTable object myDataSet .Tables[ "Customers"].TableName = "Cust"; // display the DataSetTable and SourceTable properties Console.WriteLine("myDataTableMapping.DataSetTable...

Ngày tải lên: 14/12/2013, 18:15

... statement to populate a DataSet object named myDataSet: SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); mySqlCommand.CommandText = "SELECT CustomerID AS MyCustomer, CompanyName, ... Mapping Tables and Columns In Chapter 3 , "Introduction to Structured Query Language (SQL)," you ... 'ALFKI'"; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet,...

Ngày tải lên: 24/12/2013, 01:17

... Utilizing Properties for Tables and Columns Tables and columns, like other objects in your database, have properties that allow you to control the data that is going into your tables. For example, ... Address, Phone, and so on. These would be fields, or columns, within each row. In a database, you will also have objects that allow you to query information within tables and update information. ... Stored Procedures, and Functions to view and update data within the database. To use these objects, you need to be able to create them. To create a database along with its tables in SQL Server,...

Ngày tải lên: 24/12/2013, 06:17

... command. Introduction to Oracle: SQL and PL/SQL Using Procedure Builder12Ć24 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder12Ć20 Altering Tables and Constraints 12Ć13 Adding and ... and is no longer available in the data dictionary. Altering Tables and Constraints 12Ć25 Practice Overview In this practice, you will create, modify, and drop tables related to the EMPLOYEE and ... them. Altering Tables and Constraints 12 Introduction to Oracle: SQL and PL/SQL Using Procedure Builder12Ć16 Altering Tables and Constraints 12Ć3 Objectives After you create your tables, you may...

Ngày tải lên: 24/01/2014, 10:20

... object. Next, create a Command object that is based on the string passed in strSQL. Open the connection and execute the command. Notice that the execution of the command has been wrapped in the ... don't have to add, modify, and delete tables manually. Just make sure that you back up your data before performing these tasks. 6.6 Create, Modify, and Delete Tables It is common in database ... programmatically create, modify, and delete tables. How do I do this using T-SQL? Technique To perform these tasks, you will use the CREATE TABLE, ALTER TABLE, and DROP TABLE T-SQL statements....

Ngày tải lên: 26/01/2014, 11:20

... 2009. c 2009 Association for Computational Linguistics Analysing Wikipedia and Gold-Standard Corpora for NER Training Joel Nothman and Tara Murphy and James R. Curran School of Information Technologies University ... MUC, due to differing TEST and DEV subject matter. Here we analyse the vari- ation within and between the gold standards. Table 3 lists some n-gram tag variations for BBN and CoNLL (TRAIN + DEV). ... period in Co .) and tagging errors. Some n-grams have three variants, e.g. the Standard & Poor ’s 500 which appears un- tagged, as the [ORG Standard & Poor] ’s 500, or the [ORG Standard &...

Ngày tải lên: 22/02/2014, 02:20

Ngày tải lên: 26/03/2014, 14:08

... reserved. Tables in the Oracle Database • User Tables: – Are a collection of tables created and maintained by the user – Contain user information • Data Dictionary: – Is a collection of tables ... table_name FROM user _tables ; SELECT * FROM user_catalog ; Querying the Data Dictionary • View distinct object types owned by the user. • View tables, views, synonyms, and sequences owned by ... terms of days, hours, minutes, and seconds. INTERVAL '4 5:12:10.222' DAY TO SECOND(3) Indicates 4 days, 5 hours, 12 minutes, 10 seconds, and 222 thousandths of a second. INTERVAL '4...

Ngày tải lên: 29/03/2014, 16:20

Ngày tải lên: 31/03/2014, 12:20

Ngày tải lên: 31/03/2014, 16:28

Ngày tải lên: 03/05/2014, 15:26

Ngày tải lên: 29/05/2014, 23:46