database-schema

Is there a way to create an FTS table in SQLite that is pre-populated with data from a SELECT query? I know it’s possible to create a regular table that is prepopulated with data from a SELECT: CREATE TABLE foo AS SELECT ref_id, name FROM other_table And we can create an FTS table like so: CREATE VIRTUAL TABLE bar USING FTS3(ref_id, name) The point of doing this is to update my app’s SQLite database schema while avoiding reading in all of the data from other_table . I’m really hoping there’s some way to let SQLite do all the heavy lifting here (which is what it's really good at!). Mike W. I'm

I am breaking my mind up thinking about a good document structure for handling a message app. I basically need three (or four) types of objects: The user (username, email, password, etc.) The contacts list (containing different contacts or contacts groups) The conversation (a conversation is a collection of messages between some persons) The message (contains the message body, some timestamp and the creator.) My idea was to embed the contacts into the user document and to embed the messages in a conversation document: 1. User { username: 'dev.puS', usernameCanonical: 'dev.pus', // used for

Recently we were having issues on our database server and after long efforts it was decided to change the database server. So we managed to restore the database on another server, change the connection string, etc. Everything was going as planned until we tried to access the website from a web browser. We started getting errors about database objects not being found. Later we found out that it occured as a result of the modified schema name. Since there are hundreds of database objects (tables, views and stored procedures) in a Kentico database, it is not feasible to change all of them

Actually what do they mean? All articles I find about them don't give me an idea, or my knowledge is too insufficient to understand it. Will some one give me some resources with which I can learn this from scratch. Nagaraj S Here you will find a better solution OLTP vs. OLAP OLTP (On-line Transaction Processing) is involved in the operation of a particular system. OLTP is characterized by a large number of short on-line transactions (INSERT, UPDATE, DELETE). The main emphasis for OLTP systems is put on very fast query processing, maintaining data integrity in multi-access environments and an

I have created a database in Access and right know i have to write a report. I know that the databasesystem has three forms of schemas: physical, conceptual and external. Does the following ER diagram (by using the method normalization ) belongs to the conceptual level?: Or does this belong to the conceptual level?(incl. ref integrity): As for the phisical schema, does this include the integrity rules? The Three-level ANSI-SPARC Architecture aka three schema approach : An external schema is the database (with metadata including constraints) as seen by some user, a view of the conceptual schema

This is a two-part question. Attached is a diagram for a PostgreSQL database table design. There are four tables. Table Main has a one-to-many relationship with table Submain . Table Submain has a one-many relationship with table Subsub . The primary keys for all four tables are serial NOT NULL (so they auto-increment). Each table has multiple attributes that are not shown here. Question 1. Multiple users will access this application and database. When a user accesses an application that uses this database, some of their information will be stored in table Main . Subsequent information

I use Visual Studio 2013 Professional Update 4 in combination with multiple SQL Server 2012 Enterprise servers/instances. The Idea was to create a Version controlled deployment using a Visual Studio Solution with SQL Server Projects. However for some reason the "Update Target" and "Generate Script" button is disabled. I can update the local database project from the sql server database but the other way around is not working. (see screenshot) Google is not helpful at all although I found a few people with a similar problem. Update target button is disabled after schema comparison VS2012:

Here is various outputs railroad -M | dot -Tsvg > models.svg /Users/me/.rvm/gems/ruby-1.9.2-p290/gems/railroad-0.5.0/lib/railroad/app_diagram.rb:54:in `disable_stdout': uninitialized constant AppDiagram::PLATFORM (NameError) from /Users/me/.rvm/gems/ruby-1.9.2-p290/gems/railroad-0.5.0/lib/railroad/app_diagram.rb:72:in `load_environment' from /Users/me/.rvm/gems/ruby-1.9.2-p290/gems/railroad-0.5.0/lib/railroad/app_diagram.rb:18:in `initialize' from /Users/me/.rvm/gems/ruby-1.9.2-p290/gems/railroad-0.5.0/lib/railroad/models_diagram.rb:14:in `initialize' from /Users/me/.rvm/gems/ruby-1.9.2-p290

I am having troubles to extract the DDL for a given schema with DBMS_METADATA, probably because my understanding of it is wrong. Here's what I basically do: set termout off create table copy_dml_schema(c clob, i number); declare m number; t number; e number; c clob; i number := 0; begin e := dbms_metadata.session_transform; dbms_metadata.set_transform_param (e, 'REF_CONSTRAINTS' , false ); dbms_metadata.set_transform_param (e, 'CONSTRAINTS_AS_ALTER', true ); dbms_metadata.set_transform_param (e, 'CONSTRAINTS' , true ); dbms_metadata.set_transform_param (e, 'FORCE' , true ); m := dbms_metadata