... Load Balancing: SQL databases can be distributed across multiple servers, improving scalability and availability.
3. Data Integrity
Integrity Constraints: SQL databases support integrity constraints such as primary keys, foreign keys, and unique constraints, ensuring data integrity.
ACID ...
Search found 27 matches: constraints
Searched query: constraints
- Thu Jul 18, 2024 6:55 am
- Forum: FiveWin for Harbour/xHarbour
- Topic: Dbf/cdx to sql changing
- Replies: 53
- Views: 9371
- Fri Feb 09, 2024 8:12 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: IS IT POSSIBLE TO MAKE THIS CONTROL
- Replies: 16
- Views: 2937
Re: IS IT POSSIBLE TO MAKE THIS CONTROL
Tim,
The challenge of integrating modern UI elements into traditional applications involves technological compromises and economic constraints.
The cost of updates, for example for TSwitch, can outweigh the benefits, leading to a difficult balance between innovation and financial feasibility.
I'm ...
The challenge of integrating modern UI elements into traditional applications involves technological compromises and economic constraints.
The cost of updates, for example for TSwitch, can outweigh the benefits, leading to a difficult balance between innovation and financial feasibility.
I'm ...
- Thu Aug 03, 2023 4:57 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: METHOD SavePQQ() need "id" or how to use own PRIMARY KEY ?
- Replies: 21
- Views: 3154
Re: METHOD SavePQQ() need "id" or how to use own PRIMARY KEY ?
... have different ideas and preferences.
I personally know such cases of very complex primary keys. Just those programmers' choice.
eg: constraints like
PRIMARY KEY (BRANCH,DEPT,ROWID) where branch and dept are character fields and rowid is an integer.
The programmer feels it is convenient ...
I personally know such cases of very complex primary keys. Just those programmers' choice.
eg: constraints like
PRIMARY KEY (BRANCH,DEPT,ROWID) where branch and dept are character fields and rowid is an integer.
The programmer feels it is convenient ...
- Sun Apr 09, 2023 11:51 am
- Forum: latest AI news
- Topic: Understanding how autoGPT works...
- Replies: 6
- Views: 4055
Understanding how autoGPT works...
... strengths as an LLM and pursue simple strategies with no legal complications.
GOALS:
1. calculate current planets positions in zodiac houses
CONSTRAINTS:
1. ~4000 word limit for short term memory. Your short term memory is short, so immediately save important information to files.
2. If you are ...
GOALS:
1. calculate current planets positions in zodiac houses
CONSTRAINTS:
1. ~4000 word limit for short term memory. Your short term memory is short, so immediately save important information to files.
2. If you are ...
- Tue Sep 28, 2021 8:18 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: FWH 16.08 : Built-in MySql/MariaDB functionality (Updated )
- Replies: 76
- Views: 37979
Re: FWH : Built-in MySql/MariaDB functionality
... CURRENT_TIMESTAMP, `changedt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP)
Example showing how to specify foreign key constraints, collations, calculated columns ( mysql 5.7 and above):
aStru := { ; { "code", "REFERENCES states( code )" }, ; { "details ...
Example showing how to specify foreign key constraints, collations, calculated columns ( mysql 5.7 and above):
aStru := { ; { "code", "REFERENCES states( code )" }, ; { "details ...
- Wed Apr 10, 2019 5:08 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: SayBarCode control
- Replies: 34
- Views: 10002
Re: SayBarCode control
... with the vertical lines printed, the code is not read:
https://i.postimg.cc/N0cwJMZR/bcg-linearxwrong.gif
This involves some constraints on the positioning of the code itself, since the reading device must be on the bar code passing directive and with the reading line ...
https://i.postimg.cc/N0cwJMZR/bcg-linearxwrong.gif
This involves some constraints on the positioning of the code itself, since the reading device must be on the bar code passing directive and with the reading line ...
- Wed Sep 12, 2018 3:10 am
- Forum: FiveWin for Harbour/xHarbour
- Topic: MariaDB RS AppendBlank (SOLVED)
- Replies: 12
- Views: 2317
Re: MariaDB RS AppendBlank
... Other', 'NotSpecified' )
Enum values are automatically shown with EditListBox in XBrowse and default edit dialogs.
User foreign key constraints and computed columns wherever appropriate.
Forcing upper/lower case:
Use COMMENT 'CASE:UPPER'
or COMMENT 'CASE:lower'
or COMMENT 'CASE:Proper ...
Enum values are automatically shown with EditListBox in XBrowse and default edit dialogs.
User foreign key constraints and computed columns wherever appropriate.
Forcing upper/lower case:
Use COMMENT 'CASE:UPPER'
or COMMENT 'CASE:lower'
or COMMENT 'CASE:Proper ...
- Sat Feb 17, 2018 10:59 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: Copying and Pasting Records
- Replies: 3
- Views: 1001
Copying and Pasting Records
... of the programmer to ensure that the source and destination fields have the same data type and widths and also values pasted respect the data constraints of the destination table (eg: Unique values should not be repeated). For this purpose, the programmer can change the values of some fields or ...
- Mon May 15, 2017 8:53 am
- Forum: FiveWin para Harbour/xHarbour
- Topic: Conferencia internacional de Harbour+FWH - Sesiones
- Replies: 0
- Views: 1338
Conferencia internacional de Harbour+FWH - Sesiones
... Database
* ISAM vs. SQL and how you can still do both with ADS
* ADT, VFP, Extended field types
* Data Dictionaries
* Field defaults and constraints
* SQL scripting language and some query tools
* Triggers
* Stored procedures and User defined functions
* Referential integrity (RI ...
* ISAM vs. SQL and how you can still do both with ADS
* ADT, VFP, Extended field types
* Data Dictionaries
* Field defaults and constraints
* SQL scripting language and some query tools
* Triggers
* Stored procedures and User defined functions
* Referential integrity (RI ...
- Sun May 14, 2017 1:19 am
- Forum: FiveWin for Harbour/xHarbour
- Topic: 1st FWH + [x]Harbour 2017 international conference
- Replies: 68
- Views: 305805
Re: 1st FWH + [x]Harbour 2017 international conference
... Database
* ISAM vs. SQL and how you can still do both with ADS
* ADT, VFP, Extended field types
* Data Dictionaries
* Field defaults and constraints
* SQL scripting language and some query tools
* Triggers
* Stored procedures and User defined functions
* Referential integrity (RI ...
* ISAM vs. SQL and how you can still do both with ADS
* ADT, VFP, Extended field types
* Data Dictionaries
* Field defaults and constraints
* SQL scripting language and some query tools
* Triggers
* Stored procedures and User defined functions
* Referential integrity (RI ...
- Wed May 10, 2017 7:59 am
- Forum: FiveWin for Harbour/xHarbour
- Topic: FWHMARIADB Samples
- Replies: 48
- Views: 25940
Re: FWHMARIADB Samples
... You can see the syntax how to use CHECK constraint and also how it works during execution, if you install this version of the server.
Check constraints can be for a column or for a table. In this sample, we demonstrated only column level constraints but not table level constraints. Table level ...
Check constraints can be for a column or for a table. In this sample, we demonstrated only column level constraints but not table level constraints. Table level ...
- Wed May 03, 2017 2:29 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: FWHMARIADB Samples
- Replies: 48
- Views: 25940
Re: FWHMARIADB Samples
... Points of interest:
1) Implementation of Transactions.
2) Database integrity at server level through
a) Foreign key relationships
b) Unique constraints
c) column validations
d) calculation of dependent columns
e) updation of related tables
f) ENUM type of column
3) Triggers and stored ...
1) Implementation of Transactions.
2) Database integrity at server level through
a) Foreign key relationships
b) Unique constraints
c) column validations
d) calculation of dependent columns
e) updation of related tables
f) ENUM type of column
3) Triggers and stored ...
- Sun Mar 26, 2017 4:04 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: 1st FWH + [x]Harbour 2017 international conference
- Replies: 68
- Views: 305805
Re: 1st FWH + [x]Harbour 2017 international conference
... Local-Remote-AIS servers
Advantage Tools
ADT vs DBF
Full Text Search
Understanding Data Dictionaries
Encryption and security
Defining data constraints and referencial integrity
Transactions
SQL
Triggers
Stored Procedures
Notifications
Backup and Restore
Replication
I understand we ...
Advantage Tools
ADT vs DBF
Full Text Search
Understanding Data Dictionaries
Encryption and security
Defining data constraints and referencial integrity
Transactions
SQL
Triggers
Stored Procedures
Notifications
Backup and Restore
Replication
I understand we ...
- Fri Sep 23, 2016 1:02 am
- Forum: FiveWin for Harbour/xHarbour
- Topic: FWH 16.08 : Built-in MySql/MariaDB functionality (Updated )
- Replies: 76
- Views: 37979
Re: FWH : Built-in MySql/MariaDB functionality
... nbsp; `changedt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP)
Example showing how to specify foreign key constraints, collations, calculated columns ( mysql 5.7 and above):
aStru := { ;   ...
Example showing how to specify foreign key constraints, collations, calculated columns ( mysql 5.7 and above):
aStru := { ;   ...
- Fri Mar 20, 2015 2:50 pm
- Forum: FiveWin for Harbour/xHarbour
- Topic: TTaskPanel
- Replies: 6
- Views: 1798
Re: TTaskPanel
Is it so wrong to want a transparent TExplorerBar?
Not at all.
I see that this modification is not present in FWH 15.03, why?
Due to constraints of time, we may not be able to accommodate every proposal "immediately". Urgent changes and fixes get priority.
Meanwhile, would you be pleased to ...
Not at all.
I see that this modification is not present in FWH 15.03, why?
Due to constraints of time, we may not be able to accommodate every proposal "immediately". Urgent changes and fixes get priority.
Meanwhile, would you be pleased to ...