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-~~NOTOC~~
-{{page>:top_add&nofooter&noeditbtn}}
-====== Administration: Omnidex Basics ======
-===== Omnidex Environments =====
-[[admin:basics:environments:home|Overview]] |
-[[admin:basics:environments:types|Types]] |
-**[[admin:basics:environments:create|Creating]]** |
-[[admin:basics:environments:maintain|Maintaining]] |
-[[admin:basics:environments:deploy|Deploying]]
-----
-==== Creating Environment Files ====
-There are two methods to create Omnidex Environment Files.  They can be created interactively using the [[programs:odxadmin:home|Omnidex Administrator]], or they can be created using SQL statements such as [[dev:sql:statements:create_environment:home|CREATE ENVIRONMENT]], [[dev:sql:statements:create_database:home|CREATE DATABASE]], [[dev:sql:statements:create_table:home|CREATE TABLE]] and [[dev:sql:statements:create_index:home|CREATE INDEX]].  Once created, a simple Omnidex Environment File will look like this:
-<code sql>
-> create environment
->>  in                   "simple.xml"
->>  with                 delete;
-Environment created in simple.xml
->
->
-> create database       "SIMPLE"
->>  type                 FLATFILE
->>  index_directory      "idx"
->>  in                   "simple.xml";
-Database SIMPLE created in simple.xml
->
-> create table          "HOUSEHOLDS"
->>  physical             "dat/households.dat"
->>  (
->>   "HOUSEHOLD"         CHARACTER(12),
->>   "ADDRESS"           CHARACTER(50),
->>   "CITY"              CHARACTER(28),
->>   "STATE"             CHARACTER(2),
->>   "ZIP"               CHARACTER(5),
->>   "COUNTRY"           CHARACTER(2),
->>   constraint HSHD_HOUSEHOLD_PK primary ("HOUSEHOLD")
->>  )
->>  in                   "simple.xml";
-Table HOUSEHOLDS created in simple.xml
->
->
-> create table          "INDIVIDUALS"
->>  physical             "dat/individuals.dat"
->>  (
->>   "INDIVIDUAL"        CHARACTER(12),
->>   "HOUSEHOLD"         CHARACTER(12),
->>   "NAME"              CHARACTER(50),
->>   "GENDER"            CHARACTER(1),
->>   "BIRTHDATE"         ANSI DATE,
->>   "PHONE"             CHARACTER(14),
->>   "EMAIL"             CHARACTER(60),
->>   constraint IND_INDIVIDUAL_PK primary ("INDIVIDUAL"),
->>   constraint IND_HOUSEHOLD_FK foreign ("HOUSEHOLD") references "HOUSEHOLDS"
->>  )
->>  in                   "simple.xml";
-Table INDIVIDUALS created in simple.xml
->
-</code>
-==== Adding Omnidex Indexing ====
-The easiest way to add Omnidex Indexing is to add indexing information beside each column.  This will not work in all situations, such as when multi-column indexes are being created; however, it will work in many simpler installations.  More complex installations will require the more complex features described in [[dev:sql:statements:create_table:home|CREATE TABLE]] and [[dev:sql:statements:create_index:home|CREATE INDEX]].  The example below shows the basic addition of Omnidex indexing to the same database.
-<code sql>
-> create environment
->>  in                   "simple.xml"
->>  with                 delete;
-Environment created in simple.xml
->
->
-> create database       "SIMPLE"
->>   type                FLATFILE
->>   index_directory     "idx"
->>  in                   "simple.xml";
-Database SIMPLE created in simple.xml
->
->
-> create table          "HOUSEHOLDS"
->>  physical             "dat/households.dat"
->>  (
->>   "HOUSEHOLD"         CHARACTER(12)     omnidex,
->>   "ADDRESS"           CHARACTER(50)     quicktext,
->>   "CITY"              CHARACTER(28)     quicktext,
->>   "STATE"             CHARACTER(2)      omnidex,
->>   "ZIP"               CHARACTER(5)      omnidex,
->>   "COUNTRY"           CHARACTER(2)      omnidex,
->>   constraint HOUSEHOLDS_HOUSEHOLD_PK primary ("HOUSEHOLD")
->>  )
->>  in                   "simple.xml";
-Table HOUSEHOLDS created in simple.xml
->
->
-> create table          "INDIVIDUALS"
->>  physical             "dat/individuals.dat"
->>  (
->>   "INDIVIDUAL"        CHARACTER(12)     omnidex,
->>   "HOUSEHOLD"         CHARACTER(12)     omnidex,
->>   "NAME"              CHARACTER(50)     quicktext,
->>   "GENDER"            CHARACTER(1)      omnidex bitmap,
->>   "BIRTHDATE"         ANSI DATE         omnidex,
->>   "PHONE"             CHARACTER(14)     omnidex,
->>   "EMAIL"             CHARACTER(60)     quicktext,
->>   constraint INDIVIDUALS_INDIVIDUAL_PK primary ("INDIVIDUAL"),
->>   constraint INDIVIDUALS_HOUSEHOLD_FK foreign ("HOUSEHOLD") references "HOUSEHOLDS"
->>  )
->>  in                   "simple.xml";
-Table INDIVIDUALS created in simple.xml
-</code>
-==== Updating Omnidex Indexes ====
-When Omnidex indexing is added to an Omnidex Environment, only the metadata about each index  is added to the environment.  The indexes themselves are not built until an "UPDATE INDEXES" command is issued.  This is of great benefit since it allows multiple indexes to be built with one scan of the data.  Omnidex applications frequently involve many Omnidex indexes, and building them individually would be prohibitively slow.  The example below connects to the newly create environment and updates the indexes.
-<code>
-> connect simple
-Connected to D:\class\lab1\simple.xml
->
-> update indexes
-Updated indexes for HOUSEHOLDS
-Updated indexes for INDIVIDUALS
-Omnidex indexes updated for environment USER_ENVIRONMENT
-</code>
-=====  =====
-**[[admin:basics:environments:home|Prev]]** |
-**[[admin:basics:environments:create|Next]]**
-====== Additional Resources ======
-See also:
-{{page>:admin:basics:see_also&nofooter&noeditbtn}}
-{{page>:bottom_add&nofooter&noeditbtn}}

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admin/basics/environments/create.txt · Last modified: 2016/06/28 22:38 (external edit)

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