The document provides an overview of the role and responsibilities of a database administrator (DBA). It discusses that a DBA supervises databases and database management systems to ensure availability. Key responsibilities include database security, monitoring, backup/recovery, and performance tuning. DBAs must have both technical skills and knowledge of database platforms. While important, the DBA role is challenging as it involves being available to resolve various technical issues at any time from different stakeholders. The document also provides salary data for DBA roles from an external source.
This presentation is about Database Administrator. It is also useful in Database Management System to study about Database Administrator. Also useful to make a presentation about this.
This presentation is about Database Administrator. It is also useful in Database Management System to study about Database Administrator. Also useful to make a presentation about this.
Introduction to oracle database (basic concepts)Bilal Arshad
Introduction To Oracle Database
Oracle is an Relational Database
Database Management System
What is Oracle Schema ??
Schema !!
More about Schema !!!
Table
Indexes
Oracle Table Spaces
Datafiles
The Oracle Schema or User
Data Access
PL/SQL and Java
System Model
Deadlock Characterization
Methods for Handling Deadlocks
Deadlock Prevention
Deadlock Avoidance
Deadlock Detection
Recovery from Deadlock
Combined Approach to Deadlock Handling
Introduction to oracle database (basic concepts)Bilal Arshad
Introduction To Oracle Database
Oracle is an Relational Database
Database Management System
What is Oracle Schema ??
Schema !!
More about Schema !!!
Table
Indexes
Oracle Table Spaces
Datafiles
The Oracle Schema or User
Data Access
PL/SQL and Java
System Model
Deadlock Characterization
Methods for Handling Deadlocks
Deadlock Prevention
Deadlock Avoidance
Deadlock Detection
Recovery from Deadlock
Combined Approach to Deadlock Handling
operating system
basic concept of c p u scheduling
scheduling critaria
scheduling algorithms
multi processor scheduling
real time scheduling
Thread scheduling
operating system Example
Java thread scheduling
Algorithms Evolution
operating system software process 4th chapter
operation on process,
cooperating process
inter process communication.
process concept
process scheduling
communication in client and server system
A data dictionary is a “virtual database” containing metadata (data about data). Data dictionary holds information about the database and the data that it stores.
HTML5 is a language for structuring and presenting content for the World Wide Web. it is the fifth revision of the HTML standard (created in 1990 and standardized as HTML4 as of 1997) and as of February 2012 is still under development. Its core aims have been to improve the language with support for the latest multimedia while keeping it easily readable by humans and consistently understood by computers and devices (web browsers, parsers, etc.). It improves interoperability and reduces development costs by making precise rules on how to handle all HTML elements, and how to recover from errors
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GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
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Speakers:
Bob Boule
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This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
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Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
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In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
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JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
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Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
2. Who is DBA??
• DBA is a resource that supervises both the
database and the use of the DBMS.
• DBA is usually a group, but sometimes it refers
to the database administrator.
3. What is DBA
• Database administration refers to the whole set
of activities performed by a database
administrator to ensure that a database is always
available as needed. Other closely related tasks
and roles are database security, database
monitoring and troubleshooting, and planning for
future growth.
• Database administration is an important function
in any organization that is dependent on one or
more databases.
4. Role of DBA
• The primary role of database administration is to
ensure maximum up time for the database so
that it is always available when needed. This will
typically involve proactive periodic monitoring
and troubleshooting. This in turn entails some
technical skills on the part of the DBA. In addition
to in-depth knowledge of the database in
question, the DBA will also need knowledge and
perhaps training in the platform (database engine
and operating system) on which the database
runs.
5. • A DBA is typically also responsible for other secondary, but
still critically important, tasks and roles. Some of these
include:
• Database Security: Ensuring that only authorized users
have access to the database and fortifying it against any
external, unauthorized access.
• Database Tuning: Tweaking any of several parameters to
optimize performance, such as server memory allocation,
file fragmentation and disk usage.
• Backup and Recovery: It is a DBA's role to ensure that the
database has adequate backup and recovery procedures in
place to recover from any accidental or deliberate loss of
data.
• Producing Reports from Queries: DBAs are frequently
called upon to generate reports by writing queries, which
are then run against the database.
6. Policy Formulation and Implementation
• Access Privileges
– Users should access the database only in ways in
which they are entitled.
• Security
– Access restrictions ensure that the database is
secure.
– Passwords, encryption, and views implement
security.
– Effective password protection is critical.
7. Planning for Disaster
• Databases can be harmed from hardware and
software malfunctions, and outsides forces
like floods and power outages.
• DBA’s must take active role in formulating
disaster recovery plans.
8. Archives
• An archive is a place where corporate data is kept.
• Information in an archive is removed from the
database and stored in the archive for future
reference.
• Archives are usually kept in a mass-storage device
like a disk, tape, CD, or a DVD.
• It is important such archives be kept off-site to allow
recovery should disaster strike
9. Data Dictionary Management
• Essentially the catalog, but it contains a wider
range of information, including information on
tables, fields, indexes, and programs.
• The DBA manages and updates the data
dictionary, which establishes naming
conventions for tables, fields, etc., and data
integrity rules.
10. Additional responsibilities of DBA
• Training
– DBA gives training on the DBMS and how to
access the database
• DBMS Support
– The DBA is charged with all aspects of a DBMS,
including selection and management
– DBA must evaluate each prospective DBMS using
a checklist like that shown in
Figure 8.10.
11. Additional Responsibilities of DBA
• Database design
– DBA is responsible for tuning the design, i.e.,
making changes that improve system
performance.
12. Is DBA job Easy ???
• You can find no more challenging job then job of
DBA in IT industry. Life of DBA is quite hectic.
• The DBA maintains production and test
environments, monitors active application
development projects, attends strategy and
design meetings, selects and evaluates new
products, and connects legacy systems to the
Web. And, of course: Joe in Accounting, he just
resubmitted that query from hell that’s bringing
the system to a halt. Can you do something about
that? All of this can occur within a single workday.
13. • DBAs are expected to know everything about everything.
From technical and business jargon to the latest
management and technology fads, the DBA is expected to
be “in the know.” And do not expect any private time: A
DBA must be prepared for interruptions at any time to
answer any type of question—and not just about
databases, either.
• When application problems occur, the database
environment is frequently the first thing blamed. The
database is “guilty until proven innocent.” A DBA is rarely
approached with a question like “I’ve got some really bad
SQL here. Can you help me fix it?” Instead, the DBA is
forced to investigate problems where the underlying
assumption is that the DBMS or perhaps the DBA is at fault,
when the most common cause of relational performance
problems is inefficiently coded applications.
14. Salary of DBA
Source : http://www.indeed.com/salary/Oracle-Database-Administrator.html