Getting Started with IBM Data Studio for DB2

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118 Getting Started with IBM Data Studio for DB2 Figure 3.17 – Profile options for updating the statistics for a table The RUNSTATS utility of the DB2 data server helps you to register and use a statistics profile that specifies the type of statistics that should be collected for a particular table, such as table statistics, index statistics, or distribution statistics. You can use this feature to simplify how statistics are collected by saving your RUNSTATS options to use in the future. 3. In the Profile tab, select the Update statistics now option to update the statistics immediately. 4. Open the Statistics tab to specify the type of statistics you want to collect. You can gather statistics on all columns, with an option to collect data distribution statistics. You also have an option to collect basic statistics on indexes, including optional extended statistics with data sampling that is useful for large indexes. As shown in Figure 3.18, you can leave the default settings, which are the recommended options.
Chapter 3 – Maintaining the database 119 Figure 3.18 – Options for updating statistics on a table 5. After you select the options that are appropriate for your organization, you can run the command by clicking Run, as shown in Figure 3.18 above. 6. Close the editor before you start the next task. 3.3 Moving data With Data Studio, you can move your data from the database tables to the file system (Export) and bring back the data from file system to the tables (Import or Load). Using these features lets you transfer the data from a table in a database to another table in the same or different database. Exporting and importing is also useful when you want to import a large volume of data into a table that includes large objects. This section will outline how to export data into the file system and import the data from the file system into a table. Note: The location of the data files that you use to export or import data should be on the computer where your DB2 database server exists when you select the following types: Unload -> With Export Utility Unload -> With Optim High Performance Unload Load -> With Import Utility
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3 Notices This information was deve
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Table of contents 5 Table of conten
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3.3.1 Exporting data...............
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Chapter 7 - Tuning queries ........
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11.4 Community and resources ......
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Preface 13 Keeping your skills curr
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around the world have participated
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17 About the authors Dimple Bhatia
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Contributors 19 The following peopl
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21 Acknowledgements The authors owe
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213 Chapter 7 - Tuning queries In t
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355 Appendix D - The Sample Outdoor
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Appendix E - Advanced topics for de
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E.5.4 Data web services artifacts A
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References 391 References [1] HAYES
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References 393 Books and articles 1
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396 Getting started with IBM Data S
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