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Chapter 22

Chapter 22. DBA Tools. Data Modeling & Design Tools. Look for Support standard tasks (E/R, normalization, etc.) Create a physical data model Provide an expert system to verify accuracy of physical data model Cross-reference logical to physical. Modeling & Design Cont.

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Chapter 22

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  1. Chapter 22 DBA Tools

  2. Data Modeling & Design Tools • Look for • Support standard tasks (E/R, normalization, etc.) • Create a physical data model • Provide an expert system to verify accuracy of physical data model • Cross-reference logical to physical

  3. Modeling & Design Cont. • Generate standard DDL automatically • Interface with application development tools and repository products

  4. Change Management Tools • Most used is database alteration and comparison tool • ALTER tool should • Maintain tables easily • Retain or reapply all dependent objects, authorizations and data is DROP • Navigate from object to object

  5. Change tools cont. • Provide GUI modification with before and after definitions • Batch requested changes into a work list for executing • Analyze changes to be sure DDL rules aren’t violated • Provide capability to monitor changes

  6. Comparison Tools • Should perform comparisons on: • One live database to another live database • A live database to a DDL script file • One DDL script file to another DDL script file

  7. Object Migration Tools • Migrates database objects from one database server or subsystem to another

  8. Referential Integrity Tools • These should • Analyze data for both system and user-managed referential integrity constraint • Execute faster than the DBMS-provided integrity checking utility • Enable additional types of RI to be supported

  9. Auditing Tools • Examination of a practice to determine correctness • Provide capability to read the database logs and report activity • Produce a set of prepackaged reports • Must report who makes each change • provide capability to interface with other auditing features • Provide standard and requested reports

  10. Catalog Query & Analysis • Create syntactically correct DDL statements • Modify any updatable statistical columns • Create syntactically correct authorization/security statements • Perform “drop/analysis” on DROP

  11. Query continued • Provide hierarchic listing of database objects • CREATE and DROP database objects • Operate directly on system catalog to reduce contention

  12. Security Tools • GRANT and REVOKE operations

  13. Table Editors • SQL DELETE, INSERT and UPDATE • Database utilities such as LOAD or IMPORT

  14. Performance Tools • In background mode as a batch job to report performance statistics • Foreground mode as an online monitor for application execution • Sampling the DB kernel and user address spaces for reporting • Capture DB trace information

  15. Performance cont. • Capacity planning device for statistical information about application • After-the-fact analysis tool on a workstation for application performance

  16. DB performance tools • Collect statistics for tables and indexes • Read underlying data sets to capture statistics • Set thresholds for automatic scheduling • Provide series of canned reports

  17. Application Tools • Analyzes SQL for paths • Issue warnings for SQL commands such as group by, etc. • Suggests alternative SQL solutions • Extends rules for expert systems • Analyzes the subsystems requests • Stores multiple versions of EXPLAIN

  18. DB Utilities • DBMS utilities and 3rd party vendor utilities • 3rd party utilities should • Not subvert integrity of data • Provide same features as native utility • Doesn’t subvert standard DB features • Provides twice the execution time • Correct deficiencies of standard utility

  19. Warehousing Tools • Extract, Transform and Load (ETL) • Replication tools • Propagation tools

  20. Query & Reporting Tools • DBMS usually has simple query tool • Use 3rd party query and reporting toold

  21. Programming Tools • Tests SQL statements • Perform predictive performance • Explains SQL statements for editing • Generate complete code • Provide enhanced for procedural SQL • Interface with 4GLs

  22. Other Tools • Checkpoint/restart tools • Testing tools • Debugging tools • Space management tools • Online manuals • Compression tools

  23. Vendor Evaluation • Look at check list 601-604 • Should be comprehensive evaluation of potential 3rd party vendors and DBMS vendors

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