blackboard architecture instance

A one server architecture is the simplest installation of Blackboard Learn for an organization. A one server instance means that your database, application, and collaboration servers all reside on the same server. The following diagram shows the structure of a one server architecture:

Full Answer

What is blackboard architecture?

In software engineering, the blackboard pattern is a behavioral design pattern that provides a computational framework for the design and implementation of systems that integrate large and diverse specialized modules, and implement complex, non-deterministic control strategies.

What are the advantages of blackboard architecture?

Advantages of Blackboard Architecture Style Blackboard architecture style provides concurrency which allows knowledge sources to work in parallel. This architecture supports experimentation for hypotheses and reusability of knowledge source components.

What are the components of the blackboard model?

A blackboard system consists of three components: 1) Knowledge sources (KSs); 2) Blackboard; 3) Control component. Knowledge sources are independent modules that contain the knowledge needed for problem solving.

What is a repository architecture?

A repository architecture consists of a central data structure (often a database) and a collection of independent components which operate on the central data structure Examples of repository architectures include blackboard architectures, where a blackboard serves as communication centre for a collection of knowledge ...

What makes a good architecture?

Architectures must have both form and function and it is a good test of an architecture to measure its elegance. An architecture that is well designed will tend to be elegant and have a simplicity of form that will be obvious to those that take the time study it.

Why is software architecture so important?

A software architecture introduces constraints on implementation and restricts design choices. This reduces the complexity of a software system and prevents developers from making incorrect decisions.Aug 30, 2020

What is pipe and filter architecture?

The Pipe and Filter is an architectural pattern for stream processing. It consists of one or more components called ​filters​. These filters will transform or filter data and then pass it on via connectors called ​pipes​.

What is the characteristic of blackboard?

A blackboard (also known as a chalkboard) is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.

Which of the following are major parts of blackboard architectural style?

A blackboard system consists of three components ( Figure 1 ) : Blackboard ( BB ), • Knowledge sources ( KSs), and • Control unit.

What is architecture content framework?

The Architecture Content Framework (also known as the “TOGAF Content Framework”) is defined as. “The TOGAF content framework provides a detailed model of architectural work products, including deliverables, artifacts within deliverables, and the architectural building blocks that artifacts represent.

What is architectural software architecture?

Architecture Style Software architecture is the high level structure used for creating software systems and is actually a step-by-step blueprint of the entire software that is to be built. The purpose of the software and its specific functionalities are defined by the software's architectural style and pattern used.Jan 24, 2022

What is data structure architecture?

Data architecture is a framework for how IT infrastructure supports your data strategy. The goal of any data architecture is to show the company's infrastructure how data is acquired, transported, stored, queried, and secured. A data architecture is the foundation of any data strategy.Mar 4, 2021

Prerequisites

Blackboard Learn 9.1 has been set up, configured, and tested against a single database instance.

Change from a single instance mode to RAC mode

The alias for the bbconfig.database.type.oracle.tns parameter must match the one defined in the tnsnames.ora.bb file.

Install Blackboard Learn on Oracle RACs

Be sure you have completely installed and set up your Oracle RAC environment according to Oracle's documentation before installing Blackboard Learn.

Upgrade Blackboard Learn on Oracle RACs

Be sure the database server properties are set properly to point to one of the Oracle RAC nodes. To learn more, see Changing Blackboard Learn From Oracle RAC Mode to Single Instance Mode.

Operating system, JVM, Oracle client library, and bb-config.properties file configurations for Oracle RAC

The Blackboard Learn 9.1 installer, by default, ensures the correct properties are set for the OS bit, JVM bit, Oracle client library, and the bbconfig file. The installer dynamically checks the OS and JVM for the Oracle RAC environment and selects the correct file properties for bbconfig and the Oracle client library files as follows:

Troubleshooting

ORA-00600: internal error code, arguments: [kkocxj : pjpCtx] while complex sqls.