Postico provides an easy to use interface, making Postgres more accessible for newcomers and specialists alike. Postico will look familiar to anyone who has used a Mac before. Just connect to a database and begin working with tables and views. Start with the basics and learn about advanced features of PostgreSQL as you go along. With modern pgAdmin4, you'd be better off installing pgAdmin4 on the same server where postgresql is running in server mode (`SERVERMODE = True` in `configlocal.py`), then require valid client certificates as part of your http server configuration. DataGrip, DBeaver, and Navicat for PostgreSQL are probably your best bets out of the 17 options considered. 'Much more powerful than its counterparts' is the primary reason people pick DataGrip over the competition. This page is powered by a knowledgeable community that helps you make an informed decision.
- Postico 1 3 3 – A Modern Postgresql Client Server Ubuntu
- Postico 1 3 3 – A Modern Postgresql Client Server Commands
- Postico 1 3 3 – A Modern Postgresql Client Server Command
- Postico is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The most popular Windows alternative is DBeaver, which is both free and Open Source.If that doesn't suit you, our users have ranked 35 alternatives to Postico and many of them are available for Windows so hopefully you can find a suitable replacement.
- If that doesn't suit you, our users have ranked 35 alternatives to Postico and many of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Postico are HeidiSQL (Free, Open Source), DataGrip (Paid), pgAdmin (Free, Open Source) and Valentina Studio (Freemium).
This article provides comprehensive documentation for Security-Enhanced PostgreSQL (SE-PostgreSQL).SE-PostgreSQL is a built-in enhancement of PostgreSQL, providing additional access controls based on Security-Enhanced Linux (SELinux) security policy. The following chapters show the background, overview, design, and references (object classes, permissions, etc.) for SE-PostgreSQL.
- List of chapters
- Introduction
- 1What is SE-PostgreSQL
Databases are significant facilities for managing information assets.Databases enable information to be searched for, retrieved, and stored in more elegant ways than with file systems.
Most existing RDBMSs apply their own access controls, for example, GRANT and REVOKE, without collaborating with operating system. This can result in inconsistent access controls compared to ones on filesystem and so on.
Some modern operating systems have enhanced access control features, such as SELinux.The design of most of these features is based upon the reference monitor model (which came from 1980's researches), that allows all system access to be managed by a centralized security policy.The reference monitor model assumes that object managers (for example, operating systems) can capture all system access, and then make decisions about whether that access is allowed or denied. Note: an operating systems is not the object manager in all cases.A Relational Database Management System (RDBMS) is an object manager for database objects, similar to operating systems being object managers for file system objects. Previously, RDBMSs made access control decisions independently from a centralized security policy, and as such, meticulous care to keep its consistency between OS and RDBMS.
SE-PostgreSQL is a built-in enhancement of PostgreSQL, providing fine-grained mandatory access control (MAC) for database objects.SE-PostgreSQL makes access control decisions based on SELinux security policy, the same way user access to file system objects is managed by the operating system. It provides the following significant features:
Mandatory access controls
PostgreSQL uses the concept of a database superuser that can bypass all access controls of native PostgreSQL. On the contrary, SE-PostgreSQL enforces its access control on any client, without exception, even if the client is a database superuser.Clients can only access database objects when access is allowed by both native PostgreSQL and SE-PostgreSQL, similar to the relationship between Discretionary Access Control (DAC) and Mandatory Access Control (MAC) on certain operating systems.
Fine-grained access controls
Granularity of access control depends on the RDBMS. SE-PostgreSQL allows access control to be configured at the column and row levels (only a few proprietary RDBMSs support column and row level access-control options).
Columns and rows are the smallest unit of database objects. Access control on these objects allows database administrators to apply flexible access control on them.
Consistency in access controls
SELinux requires all processes and objects to have a security context that represents its privileges and attributes. SE-PostgreSQL assigns a security context on each database objects (which are tuples in system/general tables), and makes access control decisions based on the privileges and attributes as if SELinux applies them in the kernel.
libselinux provides an interesting API named as getpeercon(), that enables you to get the security context of a peer process connecting to a server process. SE-PostgreSQL needs security contexts to make its decisions. This is a significant feature for consistency in access controls, in that privileges for clients and the attributes for objects are represented in the same form.
Consider RDBMSs (including PostgreSQL) as an inter-process communication channel, the same as file systems, networks, IPC, and so on.
The most significant purpose for security mechanisms is to protect classified information being leaked. On subsystems with individual access controls -- not a centralized one -- an attacker can choose the weakest inter-process communication channel.
SELinux is an operating system feature that applies a single, unified security policy over the whole operating system. Easy translator 15 0 0 m. System calls are intercepted and inspected. This approach allows policy to be enforced with minimal costs; however, keep in mind that several user-space object managers, such as the X Window System and RDBMSs, can be used as inter-process communication channels. Resources managed in user-space are invisible to the kernel, leaving two options for security policy: the traditional all-or-nothing policy, that does not allow user-space objects to be shared (this is unrealistic), or the enhancement of user-space object managers, making their access control decisions based on the single, unified security policy of SELinux.
The above figure demonstrates consistent
Summary: in this tutorial, you will learn step by step how to rename a PostgreSQL database using the
ALTER DATABASE RENAME TO
statement.PostgreSQL rename database steps
To rename a PostgreSQL database, you use the following steps:
- Disconnect from the database that you want to rename and connect to a different database.
- Check and terminate all active connections to the database that you want to rename.
- Use the
ALTER DATABASE
statement to rename the database to the new one.
Let’s take a look at an example of renaming a database. Fontlab 7 0 2 7347 beta download free.
Postico 1 3 3 – A Modern Postgresql Client Server Ubuntu
The following statement creates a new database called
db
:To rename the
db
database to newdb
, you follow these steps:Postico 1 3 3 – A Modern Postgresql Client Server Commands
First, disconnect from the database that you want to rename and connect to another database e.g.,
postgres
. If you use psql tool, you can use the following command to connect to the postgres
database:By connecting to the
postgres
database, you are automatically disconnected from the db
database.Next, check the all active connections to the
db
database by using the following query:The query returned the following output:
As you can see clearly from the output, there is only one connection to the
db
database.You may find that the database, which you want to rename, has many active connections. In this case, you need to inform the respective users as well as the application owners before terminating the connections to avoid data loss.
Then, terminate all the connections to the
db
database by using the following statement:After that, rename the
db
database to newdb
using the ALTER DATABASE RENAME TO
statement as follows:Last but not least, if your database is being used by applications, you should modify the connection strings.
Postico 1 3 3 – A Modern Postgresql Client Server Command
In this tutorial, you have learned how to rename a PostgreSQL database to a new one by using the
ALTER DATABASE RENAME TO
statement.