Pygresql Transaction


Access to the repository is available via: ftp git cgit http rsync Home Change Log RSS Feed Mailing Lists Report A Bug Contact Us Contributors. 0 specification. global transaction ID and branch qualifier: byte strings no longer than 64 characters. Jason--The single most useful thing about the Internet is. It begins a transaction using its processConnection or threadConnection, calls the callable, commits the transaction and closes the underlying connection; it returns whatever the callable. #is the source package name; # #The fields below are the sum for all the binary packages generated by #that source package: # is the number of people who installed this. png) PyGreSQL 홈페이지. 13-1 OK [REASONS_NOT_COMPUTED] 0xffff 0. Cain Open source involvement NetBSD developer Contributed to PostgreSQL Chief maintainer for PyGreSQL Contributor to comp. 6M : 389-ds-base-libs-1. rpm: 11-Jan-2018 01:06 : 61K : 3proxy-0. Python Forums on Bytes. When you hand in data in this way (tuple or dict, depending on paramstyle, see below), common types are converted by the library. , the table already exists) (Martin Pitt) * Add pg_restore option to run the entire session in a single transaction (Simon) Use option -1 or --single-transaction. deb ada-reference-manual_20021112web-3_all. after that, it's idle in transaction until the next bout of db activity. 7, python-2. Parent Directory - 389-ds-base-1. If you would like to see a map of the world showing the location of many maintainers, take a look at the World Map of Debian Developers. 6M : 389-ds-base-libs-1. All packages included on SUSE Linux Enterprise Server 10 SP4 for x86 are listed below. xid() Connection method:. py24-ruledispatch -. tgz 02-Sep-2014 07:51 210322 AsteriskGuide-2. o: Subject:. It is important to control transactions to ensure data integrity and to handle database errors. /05-May-2012 06:07 - AcePerl-1. rpm: 09-May-2018 18:45. Access or change database tables directly with SQL. rpm 2012-01-10 14:58 10K. Contents; The DB-API Compliant Interface; A PostgreSQL Primer; Examples for using PyGreSQL; Indices and tables; PyGreSQL Development and Support. All PostgreSQL dialects support setting of transaction isolation level both via a dialect-specific parameter create_engine. In the EPICS meeting at KEK on May,2000, Mr. The version/release/update numbers have been removed from the names, since they are not relevant in this context. 0-1) [universe] Class based template tags for Django projects. rpm: 2018-01-26 12:06. package PyGreSQL-3. Python Forums on Bytes. Cain and Pascal Andre. Normal fsync mode flushes every completed transaction to disk, guaranteeing that if the OS crashes or loses power in the next few seconds, all your data is safely stored on disk. 12 DMM Readout Software Including a Configurable Recorder oss QtZeitgeist-devel 0. It embeds the PostgreSQL query library to allow easy use of the powerful PostgreSQL features from a Python script. i686 ElectricFence. PyGreSQL is a python module that interfaces to a PostgreSQL database. tgz 29-Apr-2019 14. Active 4 years, 2 months ago. TXT: 04-Mar-2001 22:00: 4kB 0325d51c4a2a05fb. File Name ↓ File Size ↓ Date ↓ ; Parent directory/--389-ds-base-1. Project Description; 1 : 0bin: A client-side encrypted pastebin. Currently, the psycopg is the most popular PostgreSQL database adapter for the Python language. Is there a timeout option for remote access to PostgreSQL database? Ask Question Asked 4 years, 5 months ago. 4(IA64) Red Hat Linux 2. a runtime transaction manager that performs the processing needed to view and update database information. The nodmraid boot parameter currently cannot be used to force installation on disks containing spurious BIOS RAID metadata. Package: GAPDoc-1. tgz 29-Apr-2019 14:07 857339 2048-cli-0. rpm: 2014-06-09 21:39 : 140K. La valeur par défaut est de cinq transactions. We will use the parts and vendor_parts tables that we created in the creating table tutorial for the demonstration. 7 MiB: 2019-Aug-22 21:19: 389-ds-base-devel-1. o: Subject:. Cain and Pascal Andre. Like several of its commercial competitors, one of the more advanced features of PostgreSQL is its ability to perform transactional DDL via its Write-Ahead Log design. 0 and it is thread safe at level 2. AWS Lambda関数をPython 3. doInTransaction can be used to run a piece of code in a transaction. That's the up side. File Name File Size Date; Parent directory/--CodeAnalyst-2. It embeds the PostgreSQL query library to allow easy use of the powerful PostgreSQL features from a Python script. autocommit¶ A read/write attribute to get/set the autocommit mode. PostgreSQL promises that all commands within a transaction will complete or that none of them will complete. Client-Side APIs When you want to build applications that access a PostgreSQL database, you use one (or more) of the client application programming interfaces (or APIs for short). Lets say they run over time like this, with | marking transaction start and > commit (N. Name Last modified Size Description; Parent Directory - abrt-1. TrioCnx(pgdb) - This constructor method creates a new Trio connection from a given PyGreSQL connection pgdb, the default Python DB-API. org F-Secure Corporation PostgreSQL Conference East 2011 CC-BY 2. Overview of Python Database Programming. All PostgreSQL dialects support setting of transaction isolation level both via a dialect-specific parameter create_engine. Tuesday, 30 September 2014 Tue, 30 Sep '14 6:32 a. CERN linux support. Parent Directory - 389-ds-base-1. This transaction failure in Postgres can also be caused by syntax errors or failed existence checks within a transaction. 12 DMM Readout Software Including a Configurable Recorder oss QtZeitgeist-devel 0. We have some features they do not have, like user-defined types, inheritance, rules, and multi-version concurrency control to reduce lock contention. 389-ds-base-libs. 7, python-2. , DBD::Pg, PyGreSQL) and those libraries need to communicate with Postgres servers too. Add read-only transactions (Peter) Print key name and value in foreign-key violation messages (Dmitry Tkach) Allow users to see their own queries in pg_stat_activity (Kevin Brown) 以前のリリースでは、スーパーユーザのみがpg_stat_activityを使用して問い合わせ文字列を確認することができました。 通常. Isolated Transactions are not affected by changes done by concurrent transactions Durable When a transaction is COMMITed, the changes are permanent, even after a crash 35. 1 3 i586 =Sum: Debug information for package adns ##----- =Pkg: aegis 4. Name Last modified Size Description; Parent Directory - 389-ds-base/ 2015-07-20 02:28. Note that Spack colorizes output. PgdbConnectionFactory - needs PyGreSQL for connecting to PostgreSQL, springpython. 0 Development files for QtZeitgeist oss R-base 2. /13-Jun-2019 14:54 - 1oom-1. isolation_level accepted by create_engine(), as well as the Connection. 7M : 389-ds-base-devel-1. PyGreSQL is written by D'Arcy J. 7M : 389-ds-base-devel-1. PostgreSQL has most features present in large commercial DBMSs, like transactions, subselects, triggers, views, foreign key referential integrity, and sophisticated locking. fedoraproject. rpm 2010-07-29 10:55 40K 389-admin-1. PostgreSQL provides a number of database drivers for the most commonly used database application programming interfaces (APIs), which can also be used with HAWQ. Liste de diffusion de PyGreSQL. tgz 22-Feb-2011 11:23 207K AsteriskGuide-2. Supported Python Applications. 1) that is always idle in transaction when it is idle. Tenemos nuevos LIMIT/OFFSET, SET TRANSACTION ISOLATION LEVEL, SELECT FOR UPDATE, y un mejorado comando LOCK TABLE. > NOTICE: current transaction is aborted, queries ignored until end of transaction block > >>> db. 0K: yum-conf-zfsonlinux-7-1. rpm: 83K: 19-Feb-2011 05:18. rpm: 29-Aug-2014 08:33 : 2. Parent Directory - 389-ds-base-1. Name Last modified Size Description; Parent Directory - 389-ds-base/ 2015-07-20 02:28. A sample use-case: Heroku limits django web requests to 30sec, after which Heroku terminates the request without allowing django to gracefully roll-back any transactions which have not yet returned. 0 and transactions. 0 Development files for QtZeitgeist oss R-base 2. 6M : 389-ds-base-devel-1. Parent Directory - yum-conf-epel-7-. These are some of the features that make PostgreSQL unique and preferable over another database. The close () method closes a closable object such as Resultset, Statement, and Connection. 13-1 OK [REASONS_NOT_COMPUTED] 0xffff 0. 2 Libraries and includefiles for developing with R-base oss SampleICC 1. net en mettant la ligne "subscribe pygresql [email protected]" dans le corps du message et en remplaçant "[email protected]" par votre propre adresse électronique. gpload is a data loading utility that acts as an interface to the Greenplum Database external table parallel loading feature. You may want to develop your own client applications that interface to HAWQ. PyGreSQL is written by D'Arcy J. Some of the key databases supported by python are given below, In this topic, we are going to learn about Python Database Connection. /13-Oct-2019 08:58 - 1oom-1. It provides a framework within which a team of developers may work on many changes to a program. I also noticed that the planner estimates seem to be p. > SELECT * FROM T1; ==>ERROR: current transaction is aborted, commands ignored until end of transaction block> The SELECT and subsequent statements are expected to succeed against Oracle and SQL Server. message (pg. Cain and Pascal Andre. deb aconnectgui_0. bz2; freebsd-contrib-5. 7 MiB: 2019-Aug-30 04:07: 389-ds-base-devel-1. That's the up side. Sometimes this behavior is not desired; there are also some SQL commands such as VACUUM which cannot be run inside a transaction. Available with a choice of Ubuntu, Linux Mint or Zorin OS pre-installed with many more distributions supported. In other words, if a row is returned by SELECT it doesn't mean that this row really exists at the time it is returned (i. Python Forums on Bytes. Parent Directory - 389-ds-base-1. Oracle Linux with Oracle enterprise-class support is the best Linux operating system (OS) for your enterprise computing needs. notice("msg") PostgreSQL and Zope. PyGreSQL interfaces to a PostgreSQL database. 2-3ubuntu1) lightweight database migration tool for SQLAlchemy. We have some features they do not have, like user-defined types, inheritance, rules, and multi-version concurrency control to reduce lock contention. tgz 02-Sep-2014 07:51 210322 AsteriskGuide-2. To work around this issue, boot into rescue mode and run the command dmraid -rE /dev/sdX on the disks in question. You can vote up the examples you like or vote down the ones you don't like. > 2019-08-18 20:24. 7M : 389-ds-base-devel-1. PyGreSQL is written by D'Arcy J. Name Last modified Size Description; Parent Directory - 389-ds-base-1. Name Last modified Size Parent Directory: 04-Oct-2019 19:22: 1kB 0. File Name ↓ File Size ↓ Date ↓ ; Parent directory/--2048-cli-. First get an updated package list by entering the following command in to terminal if this has not been done today sudo apt update. All Software. Other useful packages and applications not currently available on this page. Berkeley DB includes b+tree, queue, extended linear hashing, fixed, and variable-length record access methods, transactions, locking, logging, shared memory caching and database recovery. dict(1) is a client which can access DICT servers from the command line. 7M : 389-ds-base-devel-1. A transaction is the propagation of one or more changes to the database. gpload-f control_file pygresql (the Python are performed as a single transaction to prevent inconsistent data when performing multiple, simultaneous. 7 MiB: 2019-Aug-22 21:19: 389-ds-base-devel-1. Tools for middleware access and support include: a middleware adapter for connecting the middleware that manages communication between the client and server so the data can be passed from client to middleware, middleware to server, and. Access or change database tables directly with SQL. rpm: 05-Feb-2018 10:10. 7M: application/x-redhat-package-manager. tgz 02-Sep-2014 07:51 215027 AcePerl-1. fc19 Secondary arch only package. rpm: 2019-08-23 06:19 : 1. rpm: 83K: 19-Feb-2011 05:18. Add read-only transactions (Peter) Print key name and value in foreign-key violation messages (Dmitry Tkach) Allow users to see their own queries in pg_stat_activity (Kevin Brown) 以前のリリースでは、スーパーユーザのみがpg_stat_activityを使用して問い合わせ文字列を確認することができました。 通常. rpm 29-Aug-2019 20:08 283644 389-ds. doInTransaction can be used to run a piece of code in a transaction. tgz) = cCNwIAOZdI5JViSVTRXuJ1BRBimOLXA8gAObtzEKCnM= SHA256 (AcePerl-1. > NOTICE: current transaction is aborted, queries ignored until end of transaction block > >>> db. Parent Directory - 389-ds-base-1. 8 KiB: 2018-Oct-19 14:25. upon connecting, it calls a few database functions, committing after each one. コマンドオプションサンプル:aws ec2 request-spot-fleet コマンドサンプルを検索した結果です。 Spot Fleetリクエストを作成します。. The spack command has many subcommands. i686 GConf2-gtk. DBUtils is a suite of Python modules allowing to connect in a safe and efficient way between a threaded Python application and a database. {"categories":[{"categoryid":387,"name":"app-accessibility","summary":"The app-accessibility category contains packages which help with accessibility (for example. 3_3 Transaction-based software configuration management system aescrypt-0. 13-1 OK [REASONS_NOT_COMPUTED] 0xffff 0. rpm: 2015-12-08 20:12 : 557K. Using a load specification defined in a YAML formatted control file, gpload executes a load by invoking the Greenplum Database parallel file server (), creating an external table definition based on the source data defined, and executing an INSERT, UPDATE. It embeds the PostgreSQL query library to allow easy use of the powerful PostgreSQL features from a Python script. xchkdmp - dump the contents of a JFS fsck log file. 0b2 Copied: SQLObject/tags/. The pygresql module 3. 7, python-2. The above statement 'select schemaName. rpm: 2019-Aug-23 06:19:52: 1. The Python DB API implementation for MySQL is MySQLdb. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. tgz 15-Mar-2012 05:36 210899 AsteriskGuide-2. Sqlite3ConnectionFactory - needs PySQLite for connecting to SQLite 3, note that PySQLite is part of Python 2. Some of the key databases supported by python are given below, In this topic, we are going to learn about Python Database Connection. your opinion about psycopg vs pygresql. PyGreSQL PyGreSQL is the first PostgreSQL adapter and one of the open-source Python modules for working with PostgreSQL databases that is actively developing. PyGreSQL is the first PostgreSQL adapter and one of the open-source Python modules for working with PostgreSQL databases that is actively developing. It embeds the PostgreSQL query library to allow easy use of the powerful PostgreSQL features from a Python script. zip: 13-May-2018 10:45: 54kB 00README. Parent Directory - 9libs-1. Thiyagarajan Arumugam is a Big Data Solutions Architect at Amazon Web Services and designs customer architectures to process data at scale. File Name File Size Date; Parent directory/--CodeAnalyst-2. Opens a connection to the SQLite database file database. rpm: 2018-01-26 12:06. Contents; The DB-API Compliant Interface; A PostgreSQL Primer; Examples for using PyGreSQL; Indices and tables; PyGreSQL Development and Support. commit() Commits the current transaction. File Name ↓ File Size ↓ Date ↓ ; Parent directory/--389-ds-base-1. rpm: 2014-06-09 21:39 : 1. Welcome to PyGreSQL¶. Import was now 42 minutes. A versatile system for organizing, sharing, and archiving materials data is presented. PgdbConnectionFactory - needs PyGreSQL for connecting to PostgreSQL, springpython. Parent Directory - 0ad-data-0. rpm: 12-Nov-2018 08:21. package PyGreSQL-3. The python program language offers extensive API's for database programming. Name Last modified Size Description Parent Directory - 389-ds-base-1. PyGreSQL은 Linux 환경에서 RPM과 tar로 설치가 가능하며, 필자의 컴퓨터에선 다음의 명령을 내려 PyGreSQL과 Python, PostgreSQL을 설치하였다. Continuamos acelerando PostgreSQL, gracias a la variedad de talentos que hay en nuetsro equipo. i686 ConsoleKit-libs. /adobe-fonts/ 07-Oct-2017 02:30 - alephone/ 07-Oct-2017 02:57 - arpack/ 07-Oct-2017 02:57 - aspell/ 07-Oct-2017 03:23. Transactional DDL. === Working on arch: ppc ==== === Working on tag: f18-override ==== === Working on tag: f19-override ==== Secondary arch only package lsvpd-1. The driving concern behind this research is the online privacy of personal data. Parent Directory - 389-ds-base-1. 7 MiB: 2019-Aug-30 04:07: 389-ds-base-devel-1. On snakes and elephants Using Python with and in PostgreSQL Jan Urbanski j. Prior to AWS, he built data warehouse solutions at Amazon. PyGreSQL is written by D'Arcy J. Berkeley DB includes b+tree, queue, extended linear hashing, fixed, and variable-length record access methods, transactions, locking, logging, shared memory caching and database recovery. i686 ElectricFence. 4(IA64) Red Hat Linux 2. We have some features they do not have, like user-defined types, inheritance, rules, and multi-version concurrency control to reduce lock contention. There are several Python drivers for PostgreSQL. 23b-alpha-unix-build. tgz 02-Sep-2014 07:51 210322 AsteriskGuide-2. That's the up side. A sample use-case: Heroku limits django web requests to 30sec, after which Heroku terminates the request without allowing django to gracefully roll-back any transactions which have not yet returned. rpm 29-Aug-2019 20:08 283644 389-ds. In this chapter, I'll describe the DB-API interface between Python and PostgreSQL, but not PyGreSQL. Easily share your publications and get them in front of Issuu’s. query('COMMIT') > Thank in advance: > > Laszlo Nagy > nagylzs(at)delfin(dot)klte(dot)hu. The driving concern behind this research is the online privacy of personal data. I have one connection to the DB, create and release a cursor, and commit transactions when I'm done. Programming with Python and PostgreSQL Peter Eisentraut [email protected] Notice attribute) N. edu, nimbus. DB-API implementations for Oracle are dc_oracle2 and cx_oracle. db files into ORACLE RDB and how useful it is. In this mode Pony splits one transaction into two. In this article, we will see how to manage PostgreSQL transactions from Python using psycopg2. rpm 22-Aug-2019 21:19 1812008 389-ds-base-devel-1. - Zéro désactive la fonctionnalité des - transactions préparées. bz2; freebsd-bin-5. transaction – get the current transaction state; parameter – get a current server parameter setting; date_format – get the currently used date format; fileno – get the socket used to connect to the database; getnotify – get the last notify from the server; inserttable – insert a list into a table; get/set_cast_hook – fallback typecast function. rpm: 2014-06-09 21:39 : 1. Parent Directory - 389-ds-base-1. html Log message: re-add. "Idle in Transaction" means that a transaction was started on a database connection and not completed and there is no longer any queries running. upon connecting, it calls a few database functions, committing after each one. DB supports C, C++, Java, and Perl APIs. 製品 > ソフトウェア > Linux > Linux技術情報 Linux matrix 逆引き rpmリスト - Kernel 2. Connect to the database server, open postgresql. AWS Lambda関数をPython 3. a runtime transaction manager that performs the processing needed to view and update database information. Parent Directory - 0xFFFF-0. rpm: 23-Aug-2019 05:19 : 1. 2 R - statistics package (S-Plus like) oss R-base-devel 2. pgTAP is a suite of database functions that make it easy to write TAP-emitting unit tests in psql scripts or xUnit-style test functions. tgz 15-Mar-2012 05:36 216504 AcePerl-1. py from ppu to cleanup pip cache at Travis and AppVeyor. Index of /software/CentOS/6. after that, it's idle in transaction until the next bout of db activity. /02-Nov-2019 07:34 - 1oom-1. 6で記述したい そのPythonで、PyGreSQLを利用してPostgreSQLにアクセスしたい という目的を果たすために、AWS Lambdaに対応したAMIでEC2インスタンスを起動し、PyGreSQLをソースコードからビルドしてみました. Tools for middleware access and support include: a middleware adapter for connecting the middleware that manages communication between the client and server so the data can be passed from client to middleware, middleware to server, and. The python program language offers extensive API's for database programming. SQL statements are put into transactions for data safety and integrity. I am running PostgreSQL 8. 05 MiB Size change: 580 B Changelog: * Sat Mar 10 2018 Jerry James Python Developer's Handbook See All Titles Python Developer's Handbook André Dos Santos Lessa Publisher: Sams Publishing First Edition December 12, 2000 ISBN: 0-672-31994-2, 960 pages. py24-pygresql - 3. /adobe-fonts/ 07-Oct-2017 02:30 - alephone/ 07-Oct-2017 02:57 - arpack/ 07-Oct-2017 02:57 - aspell/ 07-Oct-2017 03:23. query('COMMIT') > Thank in advance: > > Laszlo Nagy > nagylzs(at)delfin(dot)klte(dot)hu. 0 and it is thread safe at level 2. oscam-docs. Query method) namedresult() (pg. 7, python-2. It is important to control transactions to ensure data integrity and to handle database errors. tgz 15-Mar-2012 05:36 210899 AsteriskGuide-2. rpm for CentOS 6 from CentOS repository. It's obviously there, but we have reports that it's not as clean/functional as it should be, given that it was added on later rather than part of the original design (PyGreSQL is older than DB-API 2. Parent Directory - 389-ds-base-1. 0 support"", not to add it in the first place. gz 25-Dec-2018 03:23. and consistency are guaranteed by PostgreSQL's transaction management and by the de-fined foreign keys (constraints). db files into ORACLE RDB and how useful it is. They are extracted from open source Python projects. Name Last modified Size Description; Parent Directory - 389-ds-base/ 2019-08-01 14:51 - CUnit/ 2019-08-06 19:20. Everyone who deals with PostgreSQL deals with current transaction is aborted. com/redhat/rhel/beta/7/x86_64/os setting up new repo ftp://ftp. Cython PyGreSQL PyQt4 PyYAML audit babel boost dbus-python file graphviz gwebsockets libuser libxml2 miniupnpc mod_wsgi mpich newt openmpi protobuf pyOpenSSL pybluez pybox2d pycairo pygame pygobject3 pylibacl pyparsing pyparted pyserial python-GeoIP python-PyPDF2 python-atomicwrites python-attrs python-augeas python-blist python-cassandra. rollback() - performs a rollback for the current transaction. It provides a framework within which a team of developers may work on many changes to a program independently, and Aegis coordinates integrating these changes back into the master. rpm: 2014-06-09 21:39 : 1. Subject: EL-6 branch status Date : Sat, 1 May 2010 14:23:27 -0500 If we were to do a mass branch today we would branch everything in the tobranch file. Some of the features are: ACID transactions, foreign keys, views, sequences, subqueries, triggers, user-defined types and functions, outer joins, multiversion concurrency control. rpm 14-Nov-2013 17:37 1. 製品 > ソフトウェア > Linux > Linux技術情報 Linux matrix 逆引き rpmリスト - Kernel 2. tgz 23-Feb-2011 05:17 144K AcePerl-1. rpm: 2019-08-22 21:19 : 277K. bz2; freebsd-contrib-5. rpm: 29-Aug-2014 08:33 : 2. Überarbeiten (229) /dev/null · 7digital · AMD Generic Encapsulated Software Architecture · ARINC 825 · Andrew File System · Anforderungsprofil · Antivirenprogramm · Anwendungsfall · Anwendungsfalldiagramm · Artefakt (UML) · Audiodatenkompression · Aufwandsschätzung (Softwaretechnik) · Backdoor · Barrierefreies Internet · Bayes-Klassifikator · Bayes Spamfilter · Black-Box-Test. hi, that's a worry :) i have a pygresql-using user application (postgres-8. It is important to control transactions to ensure data integrity and to handle database errors. Parent Directory - 0xFFFF-0. The PostgreSQL server records all users’ data modification transaction like insert, update or delete and write it into a file call write-ahead (WAL) log file. execution_options(). _data_cache`` into one ordered list of similar dicts, adding dates to the monthly ScheduledTransactions as appropriate and excluding ScheduledTransactions that have been converted to real Transactions. Neil Muller. org F-Secure Corporation PostgreSQL Conference East 2011 CC-BY 2. rpm 2010-08-27 00:33 345K 389-admin-console-1. PostgreSQL JDBC transaction example. execution_options(). First, insert a new actor into the actor table. xid() Connection method:. The interface distributed with PostgreSQL (PyGreSQL) was implemented as a wrapper, so it probably won't be quite as fast as the other two; but with PyGreSQL, you can pick and choose between the two interface layers. Partitioning • Part I: Client programming (60 min) • Part II: PL/Python (30 min). Sql2diagram-sxd 1. tgz 29-Apr-2019 14. File Name ↓ File Size ↓ Date ↓ ; Parent directory/--389-ds-base-1. after that, it's idle in transaction until the next bout of db activity. Parent Directory - yum-conf-epel-7-. In this article, we will see how to manage PostgreSQL transactions from Python using psycopg2. An autonomous transaction is a transaction started from another main transaction to execute SQL orders that will be committed or cancelled independently from the calling transaction. Tools for middleware access and support include: a middleware adapter for connecting the middleware that manages communication between the client and server so the data can be passed from client to middleware, middleware to server, and. Consistency ensures that the transaction, or set of queries, results in changes that conform to your schema, constraints, foriegn keys, and more. [email protected]