Recital

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Each Recital table can have one or more data dictionaries to provide a central repository for constraints and other metadata. 

Here's how to set up field validation based on dynamic values from another table.

Using the products.dbf table from the southwind sample database, validation can be added to the categoryid field to ensure it matches an existing categoryid from the categories.dbf table.
open database southwind
alter table products add constraint;
(categoryid set check rlookup(products.categoryid,categories))
The rlookup() function checks whether an expression exists in the index (master or specified) of the specified table .  An attempt to update categoryid with a value not in the list will give an error: Validation on field 'CATEGORYID' failed.

If you have access to the Recital Workbench, you can use the modify structure worksurface to add and alter your dictionary entries, including a customized error message if required.

validation


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Latest Development News

The Lianja Application Platform is a cost-effective cloud database computing platform for SMEs (Small and Medium-sized Enterprises) that lets them focus on developing and deploying business Apps without the need to invest in lengthy application development times and an expensive IT infrastructure.

The three pillars of Lianja are:
  • The Lianja App Builder
  • The Lianja Cloud Database
  • Lianja.com Apps
If you need to develop and deploy cross-platform Visual FoxPRO GUI, Web or Mobile Apps visit the Lianja website for further details.

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Recital 10 Express Edition Linux x86 Free Download.

Recital 10 introduces the free single-user developer edition called Recital Express that can be used to develop and test multi-user Recital, Recital Server and Recital Web applications. Once the applications are ready for deployment a commercial license must be purchased. Recital Express, Recital Server Express and Recital Web Express can be used unlicensed for non-commercial purposes only.

What does this download include:

Recital 10

A powerful scripting language with an embedded database used for developing desktop database applications on Linux and Unix. Recital has a high degree of compatibility with Microsoft FoxPRO enhanced with many additional enterprise class extensions.

Web

Recital 10 Web

A server-side scripting language with an embedded database for creating web 2.0 applications. Includes plugins for apache and IIS. Coming soon! Recital Web Framework, a comprehensive OO framework built on YUI for building RIA (Rich Internet Applications) in Recital Web.

Recital 10 Server

A cross-platform SQL database and application server which includes client drivers for ODBC, JDBC and .NET enabling Recital data to be accessed client/server from Windows, Linux and Mac.

 Safe

Recital 10 Replication

A comprehensive replication product that addresses urgent data movement and synchronization needs to help support disaster recovery and business continuity for Recital applications.


Recital 10 Quick Start:

Graphical Installation

Note: The installation must be run as root. For systems with a hidden root account, please use ’Run as Root’.

  1. Download the distribution file into a temporary directory
  2. Check that the distribution file has the execute permission set
  3. Run the distribution file
  4. Follow the on screen instructions:
    1. License agreement
    2. Select components
    3. Installation directory and shortcuts
    4. Linking to /usr/bin
    5. ODBC Installation type (Recital Server / Recital Client Drivers)
    6. Java Virtual Machine selection (Recital Server / Recital Client Drivers)
    7. TomCat Installation type (Recital Server / Recital Client Drivers)
    8. Apache Firecat Plugin Installation (Recital Web Developer)
    9. Replication Service Type (Recital Replication Server)
    10. Install license file

Text Installation

Note: The installation must be run as root. For systems with a hidden root account, please precede commands with ’sudo’.

  1. Download the distribution file into a temporary directory
  2. Check that the distribution file has the execute permission set
  3. Run the distribution file
  4. Follow the on screen instructions:
    1. License agreement
    2. Select components
    3. Installation directory and shortcuts
    4. Linking to /usr/bin
    5. ODBC Installation type (Recital Server / Recital Client Drivers)
    6. Java Virtual Machine selection (Recital Server / Recital Client Drivers)
    7. TomCat Installation type (Recital Server / Recital Client Drivers)
    8. Apache Firecat Plugin Installation (Recital Web Developer)
    9. Replication Service Type (Recital Replication Server)
    10. Install license file


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Add this directive to your /etc/httpd/httpd.conf file and restart apache.
DirectoryIndex default.rsp index.html 
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If you have software packages which you wish to share with others or simply between your own personal machines, a neat and easy solution is to create your own YUM repository and provide your .repo file for download.

YUM is by far the easiest method of installing software on Red hat, Centos and Fedora. Not only does it mean you don't need to trawl the web looking for somewhere to download the packages, YUM does a great job of satisfying any package dependencies. As long as the required packages are available in the enabled repositories on your system, YUM will go out and get everything you need.

To create your own YUM repository, you will need to install the yum-utils and createrepo packages:

yum install yum-utils createrepo

yum-utils contains the tools you will need to manage your soon to be created repository, and createrepo is used to create the xml based rpm metadata you will require for your repository.

Once you have installed these required tools, create a directory in your chosen web server's document root e.g:

mkdir -p /var/www/html/repo/recital/updates

Copy the rpm's you wish to host into this newly created directory.

The next step is to create the xml based rpm metadata. To create this use the createrepo program we installed earlier.

At the shell type the following command:

createrepo -v -s md5 /var/www/html/repo/recital/updates


This will create the required metadata in the repodata directory of your /var/www/html/repo/recital/updates directory.

root@test repodata]# ls -l
rwotal 44
-rw-r--r-- 1 root root 28996 Jan 13 21:42 filelists.xml.gz
-rw-r--r-- 1 root root   284 Jan 13 21:42 other.xml.gz
-rw-r--r-- 1 root root  1082 Jan 13 21:42 primary.xml.gz
-rw-r--r-- 1 root root   951 Jan 13 21:42 repomd.xml

To do a final consistency check on your repository run the following command:

verifytree /var/www/html/repo/recital/updates

We now have a fully functioning YUM repository for our hosted rpm packages.
The next process is to create a .repo file in the client systems /etc/yum.repos.d directory.

Navigate to the /etc/yum.repos.d directory on your system as root.

Using your preferred text editor to create the .repo file. In this example I will call it recital.repo.
Now paste in the following lines:

[Recital]
name=Recital Update Server
baseurl=http://ftp.recitalsoftware.com/repo/recital/updates
enabled=1
gpgcheck=1

Once that is saved, at the shell prompt on the same machine (YUM client system).

$ yum repolist
Loaded plugins: presto, refresh-packagekit
repo id                  repo name                                 status
Recital                  Recital Update Server                     enabled:      1
adobe-linux-i386         Adobe Systems Incorporated                enabled:     17
fedora                   Fedora 12 - i386                          enabled: 15,366

As you can see the Recital repo is now being picked up and we have access to all the packages it is hosting.

See how easy that was!

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Recital is a rich and versatile product with many ways to do the same thing. Developers usually write code in the way that they are accustomed to without paying much attention to how this will perform in a multi-user environment with large amounts of users and transactions. The best way to optimize Recital applications is to use the built-in tuning capabilities introduced in Recital 10.

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Key features of the Recital scripting language include:

What are the key feature of the Recital database?

  • High performance database application scripting language
  • Modern object-oriented language features
  • Easy to learn, easy to use
  • Fast, just-in-time compiled
  • Develop desktop or web applications
  • Cross-platform support
  • Extensive built-in functions
  • Superb built-in SQL command integration
  • Navigational data access for the most demanding applications
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Regarding children under the age of 13, recitalsoftware.com does not knowingly:

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Updates to this Privacy Policy

We may update this policy. We will contact you if we make any substantial changes in how we use your personal information.

This privacy policy was last updated on July 1, 2010.

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If you have any questions about this privacy policy itself, or on how we use personal information on recitalsoftware.com, please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it..

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RTOS()

Syntax

RTOS( [ <workarea> ] )

Description

The RTOS() function returns all the fields in the current row as a string. The string will begin with the unique row identifier and then the deleted flag, followed by the data in the record. An optional workarea can be specified, otherwise the current workarea will be used

Example

use backup in 0
use accounts in 0
nrecs=reccount()
for i = 1 to nrecs
  if rtos(accounts) != rtos(backup)
     debug("record "+recno()+" don't match")
  endif
next

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After split brain has been detected, one node will always have the resource in a StandAlone connection state. The other might either also be in the StandAlone state (if both nodes detected the split brain simultaneously), or in WFConnection (if the peer tore down the connection before the other node had a chance to detect split brain).

At this point, unless you configured DRBD to automatically recover from split brain, you must manually intervene by selecting one node whose modifications will be discarded (this node is referred to as the split brain victim). This intervention is made with the following commands:

# drbdadm secondary resource 
# drbdadm disconnect resource
# drbdadm -- --discard-my-data connect resource


On the other node (the split brain survivor), if its connection state is also StandAlone, you would enter:

# drbdadm connect resource


You may omit this step if the node is already in the WFConnection state; it will then reconnect automatically.

If all else fails and the machines are still in a split-brain condition then on the secondary (backup) machine issue:

drbdadm invalidate resource
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