1. ISYS366, Database Administration II
ISYS366 – Week 1
Introduction
11/24/2018
ISYS366, Database Administration II

2. ISYS366, Database Administration II
Who is a DBA?
There are three (or two, depending on one’s perspective) types of databases
OLTP
OLAP
DW/DSS
(These latter two are structurally very similar)
11/24/2018
ISYS366, Database Administration II

3. Introduction to three types of computing
OLTP
This is the sort of data entry that you might find in a large catalog vendor, like L.L.Bean. There are large amounts of data input and updates. The querying done against this database is generally done to find whether an item is in stock (perhaps against one relatively small table) or to create an invoice (generally against no more than three or four tables). All data is current.
11/24/2018
ISYS366, Database Administration II

4. Introduction to three types of computing
OLAP
This sort of computing uses statistics heavily. The user is analyzing data in the database. There are lots of complex queries, but little or no inserts or updates.
DSS/DW
This is the sort of computing that executives and business people do to determine long term trends in their data. Queries are generally very complex. The only time data gets put in is when it is initially loaded.Historical data.
11/24/2018
ISYS366, Database Administration II

5. ISYS366, Database Administration II
Who is a DBA?
Now combine the different types of databases with the various duties of a DBA
11/24/2018
ISYS366, Database Administration II

6. ISYS366, Database Administration II
Basic Duties of the DBA
Here are some of the basic roles of the Oracle DBA. This is not an all-inclusive list. Depending on your installation and staff, your duties might not include all of these, or might include many more items.
Installation of new software
Configuration of hardware and software with the system administrator
Security administration
Performance tuning and monitoring
Backup and recovery
Routine scheduled maintenance
Troubleshooting
Failure recovery
Communicating with a diverse audience
11/24/2018
ISYS366, Database Administration II

7. Additional Duties of the DBA
Some of the more advanced duties of the Oracle DBA might include the following:
Data analysis
Database design (preliminary)
Data modeling and optimization
Assisting developers with SQL and stored procedure dev
Enterprise standards and naming conventions
Development of production migration procedures
Environmental documentation
Consult with development team and end users
Evaluation of new hardware and software
Capacity planning and sizing
11/24/2018
ISYS366, Database Administration II

8. ISYS366, Database Administration II
Who is a DBA?
Now combine the duties of a DBA with the different types of databases, and layer them on top of different (O)RDBMSs or data warehousing systems, and you have a general idea of what this guy/gal is, and why they command the big bucks!
11/24/2018
ISYS366, Database Administration II