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In this lesson, we ask the
question, What is Oracle?
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People in the IT industry talk
about Oracle all the time.
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I work with Oracle,
or we use Oracle.
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So what does that really mean?
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What is Oracle anyway?
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Put simply, Oracle is a company,
Oracle is a family of products,
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and it's also a relational
database management system.
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Oracle, the company,
began in 1977
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under the name SDL, or Software
Development Laboratories.
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The people that started Oracle
were inspired by the work
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done by a Dr.
Theodore or Ted Codd.
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Dr. Codd had been working on
a new theory to store data.
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Prior to Dr. Codd's
work, database storage
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worked on a flat model
or the flat file.
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We are all, generally, aware
of how a flat file works, just
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think of a spreadsheet.
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It has data laid out
in columns and rows.
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Only in a flat file terminology,
these are fields and records.
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Dr. Codd theorized
that these flat files
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could be related to one another
forming, what he called,
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a relational model.
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The founders of
Oracle use this model
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in the creation of the
Oracle Database Server.
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In 1979, they sold
the first version
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of their relational database.
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As the story goes, the
first version of Oracle
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was released as version 2
because founder Larry Ellison
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didn't believe anyone would
want to buy a version 1 product.
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In 1982, they renamed their
company Oracle to align
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with their flagship product.
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As a family of
products, the scope
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of Oracle's offerings in
the enterprise IT sphere
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are nearly unmatched.
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With the exception
of network hardware,
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it's quite possible
to run an entire data
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center with nothing but
Oracle hardware and software.
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In the server and
storage area, Oracle
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offers no less than 10
major server platforms,
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each tailored to a different
tier of the IT framework.
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For example, Exadata
is designed to run
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as a specifically
configured server
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while running the
Oracle database.
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Exalogic is designed for
application and web servers.
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Oracle even offers
a system designed
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with large amounts of
RAM that work solely
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as a computation platform
for business intelligence.
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In the operating
system arena, Oracle
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offers two separate types.
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Oracle Solaris, a Unix operating
system, and Oracle Linux,
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which is a Red Hat compatible
version of the Linux OS.
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In the virtualization
sphere, Oracle
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offers both an enterprise
virtualization solution
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and a workstation-based system.
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Oracle VM server is an
enterprise level product
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that allows
administrators to use
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a finite amount of
physical servers
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to deliver a much larger
number of virtual servers.
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Oracle also provides,
for free, one
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of the most popular desktop
virtualization systems,
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Oracle VM VirtualBox.
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VirtualBox allows a user to run
multiple different operating
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systems from a single machine.
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For many years, Oracle has
offered the Oracle Application
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Server product as a framework
for hosting and running
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customer web applications.
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After their acquisition
of BEA Systems,
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Oracle acquired the very popular
WebLogic Application Server.
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Oracle has merged these two into
its current WebLogic offering
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known as Fusion Middleware.
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Finally, in the area of
programming languages,
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Oracle maintains and distributes
perhaps the most popular
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programming language
on the planet, Java.
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The Java language
is, and has been,
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key to Oracle's product
strategy for many years.
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Its influence is felt throughout
Oracle software offerings.
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In addition to Java, Oracle also
provides the PL/SQL language,
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the leading language
for handling data
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in an Oracle database.
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Finally, for our
purposes, Oracle
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is an RDBMS, or Relational
Database Management System.
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There are many types of RDBMS on
the market today such as IBM's
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Db2 and Microsoft SQL Server.
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But the Oracle RDBMS
is the most widely used
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and commands the largest
share of the market.
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In these lessons, when
we refer to Oracle,
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we're, generally, referring
to the Oracle RDBMS.
7149
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