c# barcode image generation library ANSWERS TO THE EXERCISES in Java

Creation ECC200 in Java ANSWERS TO THE EXERCISES

APPENDIX B
Data Matrix 2d Barcode Generator In Java
Using Barcode encoder for Android Control to generate, create Data Matrix 2d barcode image in Android applications.
www.OnBarcode.com
Barcode Encoder In Java
Using Barcode creation for Android Control to generate, create Barcode image in Android applications.
www.OnBarcode.com
ANSWERS TO THE EXERCISES
Create UPC-A Supplement 5 In Java
Using Barcode creator for Android Control to generate, create UPC-A Supplement 2 image in Android applications.
www.OnBarcode.com
Printing USS Code 39 In Java
Using Barcode generator for Android Control to generate, create Code-39 image in Android applications.
www.OnBarcode.com
11 Exercises
Data Matrix 2d Barcode Maker In Java
Using Barcode creator for Android Control to generate, create Data Matrix 2d barcode image in Android applications.
www.OnBarcode.com
Printing QR In Java
Using Barcode maker for Android Control to generate, create QR-Code image in Android applications.
www.OnBarcode.com
1. Look at Listings 11-26 and 11-37. Apart from aesthetics, there is another important reason why the lines surrounding the script headers in those two listings switch from minus signs to equal signs. Obviously, the first two minus signs are mandatory to turn the lines into comments. What would be wrong with using only minus signs Answer: It is the last minus sign that causes trouble. It will make SQL*Plus interpret the next line as a continuation of the current line. Since the current line is a comment, the next line will be considered a continuation of that comment. Therefore, the SQL or SQL*Plus command on the next line will be ignored by SQL*Plus. 2. Create a SQL*Plus script to create indexes. The script should prompt for a table name and a column name (or list of column names), and then generate the index name according to the following standard: i_<tab-id>_<col-id>. Solution 11-2. SQL*Plus Script to Create Indexes accept table_name default &&table_name prompt 'Create index on table [&table_name]: ' accept column_name default &&column_name prompt 'on column(s) [&column_name]: ' set termout off store set sqlplus_settings replace save buffer.sql replace column dummy new_value index_name set heading off feedback off verify off set termout on select 'Creating index' , upper(substr( 'i_' || substr('&table_name',1,3) || '_' || translate ( replace ( '&column_name' , ' ', '') , ',', '_') , 1, 30) ) as dummy , '...' from dual; create index &index_name on &table_name(&column_name); get buffer.sql nolist @sqlplus_settings set termout on
Barcode Generator In Java
Using Barcode generation for Android Control to generate, create Barcode image in Android applications.
www.OnBarcode.com
Generating ISBN In Java
Using Barcode maker for Android Control to generate, create ISBN image in Android applications.
www.OnBarcode.com
APPENDIX B
Data Matrix 2d Barcode Generation In VS .NET
Using Barcode creation for ASP.NET Control to generate, create Data Matrix 2d barcode image in ASP.NET applications.
www.OnBarcode.com
Data Matrix Recognizer In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
ANSWERS TO THE EXERCISES
Code 128 Code Set C Maker In Java
Using Barcode generator for Java Control to generate, create Code128 image in Java applications.
www.OnBarcode.com
Paint Linear In Visual C#.NET
Using Barcode encoder for .NET Control to generate, create 1D Barcode image in .NET framework applications.
www.OnBarcode.com
The following are some comments on this solution: The script remembers table names and column names, and offers them as default values on consecutive executions. This may save you some time when creating multiple indexes. The script saves all current SQL*Plus settings before changing the SQL*Plus environment. This enables the script to restore the original SQL*Plus environment at the end of the script. The script saves the current contents of the SQL buffer, and then restores the contents at the end with the GET ... NOLIST command. This way, you can resume working on that SQL statement. The COLUMN DUMMY NEW_VALUE INDEX_NAME command captures the result of the query against the DUAL table, which generates the index name. The index name generation contains many SQL functions. It takes the first three characters of the table name as the table identifier. The script removes all spaces from the column name list, and then replaces the commas with underscores. To avoid error messages for too-long index names, the script truncates the result to a maximum length of 30.
Quick Response Code Encoder In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create QR Code JIS X 0510 image in ASP.NET applications.
www.OnBarcode.com
Code 3/9 Drawer In Java
Using Barcode printer for Java Control to generate, create Code 3 of 9 image in Java applications.
www.OnBarcode.com
3. Create a SQL*Plus script to produce an index overview. The script should prompt for a table name, allowing you to specify any leading part of a table name. That is, the script should automatically append a % wildcard to the value entered. Then, it should produce a report of all indexes, showing the table name, index name, index type, and number of columns on which the index is based. Solution 11-3. SQL*Plus Script to Produce an Index Overview set store save set set break accept select , termout off set sqlplus_settings.sql replace buffer.sql replace verify off feedback off termout on on table_name skip 1 on index_type table_name default &&table_name prompt 'List indexes on table [&table_name.%]: '
Encode DataMatrix In None
Using Barcode creation for Office Excel Control to generate, create ECC200 image in Office Excel applications.
www.OnBarcode.com
Print QR Code JIS X 0510 In Objective-C
Using Barcode drawer for iPhone Control to generate, create QR Code JIS X 0510 image in iPhone applications.
www.OnBarcode.com
ui.table_name decode(ui.index_type ,'NORMAL', ui.uniqueness ,ui.index_type) as index_type , ui.index_name , (select count(*) from user_ind_columns uic where uic.table_name = ui.table_name and uic.index_name = ui.index_name) as col_count from user_indexes ui where ui.table_name like upper('&table_name.%') order by ui.table_name
Reading Barcode In Visual C#.NET
Using Barcode Control SDK for .NET framework Control to generate, create, read, scan barcode image in .NET framework applications.
www.OnBarcode.com
Recognizing Quick Response Code In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
APPENDIX B
Drawing Barcode In Java
Using Barcode creator for BIRT reports Control to generate, create Barcode image in BIRT applications.
www.OnBarcode.com
Barcode Encoder In Visual C#
Using Barcode printer for VS .NET Control to generate, create Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
ANSWERS TO THE EXERCISES
ui.uniqueness desc;
get buffer.sql nolist @sqlplus_settings set termout on Many SQL*Plus tricks in this script are similar to the ones used in the script for the previous exercise. Here are some additional comments on this solution: The BREAK command enhances the readability. You use the same default value trick for the table name. You need the period character in the ACCEPT command as a separator between the TABLE_NAME variable and the percent sign.
4. Create a script that disables all constraints in your schema. Answer: First, you must find out which SQL statement allows you to disable constraints, because your script is going to generate that statement. The following SQL command is the most obvious choice: SQL> ALTER TABLE <table-name> DISABLE CONSTRAINT <constraint-name> [CASCADE] As the next step, you must figure out how to retrieve relevant information about your constraints. The SQL*Plus DESCRIBE command is useful: SQL> describe user_constraints Name --------------------------------OWNER CONSTRAINT_NAME CONSTRAINT_TYPE TABLE_NAME SEARCH_CONDITION R_OWNER R_CONSTRAINT_NAME DELETE_RULE STATUS DEFERRABLE DEFERRED VALIDATED GENERATED BAD RELY LAST_CHANGE INDEX_OWNER INDEX_NAME INVALID VIEW_RELATED SQL> Type -----------VARCHAR2(30) VARCHAR2(30) VARCHAR2(1) NOT NULL VARCHAR2(30) LONG VARCHAR2(30) VARCHAR2(30) VARCHAR2(9) VARCHAR2(8) VARCHAR2(14) VARCHAR2(9) VARCHAR2(13) VARCHAR2(14) VARCHAR2(3) VARCHAR2(4) DATE VARCHAR2(30) VARCHAR2(30) VARCHAR2(7) VARCHAR2(14) Null -------NOT NULL NOT NULL
Copyright © OnBarcode.com . All rights reserved.