Can someone tell me the difference between pgAdmin and postgreSQL? Are both of them one in the same? I can't draw a ER diagram in pgAdmin but was wondering if it's possible in postgreSQL?
Once I downloaded the postgreSQL it automatically downloaded the pgAdmin and the postgreSQL database is not in sight.
The PostgreSQL is a database engine implementing SQL standards. It usually listen as a server on a network tcp port to provide its abilities.
The pgAdmin is a sort of client. You are able to manipulate schema and data on an instance or multiple instances of PostgreSQL engines.
The MS Windows instalation package consists of both PostgreSQL server and PgAdmin client. So far right after the instalation you are able to manage your databases.
PostgreSQL (pronounced as post-gress-Q-L) is an open source relational
database management system ( DBMS ) developed by a worldwide team of
volunteers. PostgreSQL is not controlled by any corporation or other
private entity and the source code is available free of charge.
The pgAdmin package is a free and open source graphical user interface
administration tool for PostgreSQL, which is supported on many
computer platforms.
phpPgAdmin is a web-based administration tool for PostgreSQL written in PHP and based on the popular phpMyAdmin interface
originally written for MySQL administration
Hope you can understand now it well!!
Related
I am trying to use IBM APP Connect Enterprise to connect to a Postgresql Datasource and execute Database complex queries (Complex SELECT, INSERT, UPDATE Statements)
All I can find is the loopback node which is using limited (select, insert and update) statements.
Is there any option that I can include an esql having a PASSTHRU function as the one used with ODBC (Oracle datasources)?
You could use App Connect for the interactions with Postgresql: https://www.ibm.com/docs/en/app-connect/containers_cd?topic=examples-connecting-app-connect-postgresql
You should be able to call your App Connecto flow using a Callable Flow (via the Switch Server): https://www.ibm.com/docs/en/app-connect/12.0?topic=pecf-preparing-environment-split-processing-between-app-connect-enterprise-app-connect-cloud
You should be able to add a postgresql database as an ODBC database through the UnixODBC layer (i.e. add an entry to the odbcinst.ini file), it's not directly supported though, so if you find an issue you'd need to reproduce with a supported database.
I haven't tried it myself yet, I should hopefully have time in the not too distant future.
Searching the internet for "unixodbc postgres odbcinst.ini" gave some good results, which is where I'd start.
I would like to develop a ER diagram using DBeaver (Eclipse plugin) for a database that doesn't yet exist. Also, the database server doesn't exist.
Can DBeaver be used to develop a ER diagram without connecting to an existing database server? I can only find documentation for working with an existing database or connecting to an existing database server.
Nope, sorry.
DBeaver tools are always associated with the current connection.
For example, in the ERD when adding tables, DBeaver often sends requests to the database of foreign keys.
You can use standard sample SQLite database in DBeaver for experiments.
I'm fairly new to Oracle SQL developer. As I'm trying to make a new connection via TNS, I'm getting this error down below which I've been looking to solve for a while fruitlessly.
Error Message:
Statut : échec -Echec du test : no ocijdbc18 in java.library.path
Assuming MySQL is a typo (You are using port 1521, which is the default port for Oracle database, also its giving you ODBC error, so I assume its an Oracle database. Remember that you can connect SQL developer to a MySQL database, so please clarify if you want to connect to a MySQL database rather than Oracle) your problem is due to lack of Oracle Data Base Connector driver (ODBC). From this link download the latest version of Oracle Instant client and install it on your machine. Then define ORACLE_HOME to the path of Instant client installation (To the actual installation folder, the one that contains folders like bin, network and so on) and restart SQL Developer, then you should be good to go.
P.S. : as #thatjeffsmith has mentioned correctly in the comments, it's not necessary to have Oracle Client and/or ODBC (or similar) drivers in order to connect to an Oracle database. Using basic as the connection type and adding the correct connection info would suffice. This Article in Oracle Magazine has extensively talked about the different connection types.
can any one help me with this?
How pg-admin is used with postgresql?
How do they work together?
I want to know the working and the realtion between the two.
pgAdmin is a GUI client specifically written for PostgreSQL. It is written in Python and uses the PostgreSQL C library libpq via psycopg2 to communicate with the PostgreSQL database server.
You need the PostgreSQL server running before you can connect to it with pgAdmin.
pgAdmin is an independent project, and it is written by different people than PostgreSQL (although there are naturally overlaps).
Suppose I have multiple Oracle databases in the same server. Now I want to connect to particular database and query a table just like SQL Server 2008. How to start particular Oracle database?
If you are using SQL*Plus, the most common syntax for opening a connection is
sqlplus user_name/password#tns_alias
In this example TNS_ALIAS is the TNS alias for the particular database you want to connect to (most likely "XE" based on your followups to inium's answer). If you want to connect to a different database, you would need to specify a TNS alias for that specific database.
Note that since you are coming from a SQL Server background, the SQL Server definition of a database is rather different than the Oracle definition. What SQL Server calls a database is similar logically to what Oracle calls a schema (and similar physically to what Oracle calls a tablespace). So when you're dealing with Oracle, it's much more common to have many schemas in a single database than to have a large number of databases on a server. This is particularly true if you're using the Express Edition (Oracle XE) where you're generally limited to one database per machine.
go to cmd and type sqlplus <database-name>/<database-password>
You can use SQL Developer, it's similar to SQL Enterprise Manager 2005. Just create a new connection using the db user name and password.