How to create article tables, categories and tags?How does database indexing work?How can I prevent SQL injection in PHP?Add a column with a default value to an existing table in SQL ServerInsert results of a stored procedure into a temporary tableHow do I UPDATE from a SELECT in SQL Server?Finding duplicate values in a SQL tablesql select query for one row in one table and multiple row from another tableSelect posts and tags in a single queryHow to import an SQL file using the command line in MySQL?How to join three table by laravel eloquent model
Why did the Germans forbid the possession of pet pigeons in Rostov-on-Don in 1941?
Calculate Levenshtein distance between two strings in Python
How is it possible for user's password to be changed after storage was encrypted? (on OS X, Android)
Lied on resume at previous job
How to manage monthly salary
Is it legal to have the "// (c) 2019 John Smith" header in all files when there are hundreds of contributors?
Why do UK politicians seemingly ignore opinion polls on Brexit?
Domain expired, GoDaddy holds it and is asking more money
Is there a familial term for apples and pears?
What is GPS' 19 year rollover and does it present a cybersecurity issue?
Why is my log file so massive? 22gb. I am running log backups
Patience, young "Padovan"
I see my dog run
COUNT(id) or MAX(id) - which is faster?
Email Account under attack (really) - anything I can do?
New order #4: World
How to answer pointed "are you quitting" questioning when I don't want them to suspect
Copycat chess is back
Some basic questions on halt and move in Turing machines
Eliminate empty elements from a list with a specific pattern
aging parents with no investments
What is the offset in a seaplane's hull?
What does 'script /dev/null' do?
extract characters between two commas?
How to create article tables, categories and tags?
How does database indexing work?How can I prevent SQL injection in PHP?Add a column with a default value to an existing table in SQL ServerInsert results of a stored procedure into a temporary tableHow do I UPDATE from a SELECT in SQL Server?Finding duplicate values in a SQL tablesql select query for one row in one table and multiple row from another tableSelect posts and tags in a single queryHow to import an SQL file using the command line in MySQL?How to join three table by laravel eloquent model
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;
I do not know how correctly integrate all these tables in 2nf SQL. I have some tables. They look like this:
posts:
id, title
categories:
id, name
tags:
id, name
I would like to have one table post-category-tag, with fields:
(id, post_id, category_id, tag_id). Not sure if this is correct, since the article may have a large number of tags. Show me please how to create this table correctly.
mysql sql
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
add a comment |
I do not know how correctly integrate all these tables in 2nf SQL. I have some tables. They look like this:
posts:
id, title
categories:
id, name
tags:
id, name
I would like to have one table post-category-tag, with fields:
(id, post_id, category_id, tag_id). Not sure if this is correct, since the article may have a large number of tags. Show me please how to create this table correctly.
mysql sql
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
post-category-tag, with fields: (id, post_id, category_id, tag_id)looks like 3nf. What stops you applying this?
– Derviş Kayımbaşıoğlu
Mar 8 at 7:09
@Simonare Can you show me how some fields look like?
– Alex Smirnov
Mar 8 at 7:14
Actually, if a post can belong to more than one category, then I would expect there to be a table of post_categories, otherwise I would expect category_id to be a column in posts. Then I would expect there to be another table: post_tags, with no mention of categories in it. Note that there are no 'articles' here.
– Strawberry
Mar 8 at 8:21
@Strawberry Is it right? post_category (id, post_id, category_id), post_tags(id, post_id, tag_id).
– Alex Smirnov
Mar 8 at 10:32
It depends on your requirements, but looks plausible to me. And, as mentioned, the surrogate key may not be necessary if the remaining columns serve to uniquely identify each row (a natural composite key).
– Strawberry
Mar 8 at 10:34
add a comment |
I do not know how correctly integrate all these tables in 2nf SQL. I have some tables. They look like this:
posts:
id, title
categories:
id, name
tags:
id, name
I would like to have one table post-category-tag, with fields:
(id, post_id, category_id, tag_id). Not sure if this is correct, since the article may have a large number of tags. Show me please how to create this table correctly.
mysql sql
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
I do not know how correctly integrate all these tables in 2nf SQL. I have some tables. They look like this:
posts:
id, title
categories:
id, name
tags:
id, name
I would like to have one table post-category-tag, with fields:
(id, post_id, category_id, tag_id). Not sure if this is correct, since the article may have a large number of tags. Show me please how to create this table correctly.
mysql sql
mysql sql
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
edited Mar 8 at 7:05
Alex Smirnov
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
asked Mar 8 at 6:49
Alex SmirnovAlex Smirnov
14
14
post-category-tag, with fields: (id, post_id, category_id, tag_id)looks like 3nf. What stops you applying this?
– Derviş Kayımbaşıoğlu
Mar 8 at 7:09
@Simonare Can you show me how some fields look like?
– Alex Smirnov
Mar 8 at 7:14
Actually, if a post can belong to more than one category, then I would expect there to be a table of post_categories, otherwise I would expect category_id to be a column in posts. Then I would expect there to be another table: post_tags, with no mention of categories in it. Note that there are no 'articles' here.
– Strawberry
Mar 8 at 8:21
@Strawberry Is it right? post_category (id, post_id, category_id), post_tags(id, post_id, tag_id).
– Alex Smirnov
Mar 8 at 10:32
It depends on your requirements, but looks plausible to me. And, as mentioned, the surrogate key may not be necessary if the remaining columns serve to uniquely identify each row (a natural composite key).
– Strawberry
Mar 8 at 10:34
add a comment |
post-category-tag, with fields: (id, post_id, category_id, tag_id)looks like 3nf. What stops you applying this?
– Derviş Kayımbaşıoğlu
Mar 8 at 7:09
@Simonare Can you show me how some fields look like?
– Alex Smirnov
Mar 8 at 7:14
Actually, if a post can belong to more than one category, then I would expect there to be a table of post_categories, otherwise I would expect category_id to be a column in posts. Then I would expect there to be another table: post_tags, with no mention of categories in it. Note that there are no 'articles' here.
– Strawberry
Mar 8 at 8:21
@Strawberry Is it right? post_category (id, post_id, category_id), post_tags(id, post_id, tag_id).
– Alex Smirnov
Mar 8 at 10:32
It depends on your requirements, but looks plausible to me. And, as mentioned, the surrogate key may not be necessary if the remaining columns serve to uniquely identify each row (a natural composite key).
– Strawberry
Mar 8 at 10:34
post-category-tag, with fields: (id, post_id, category_id, tag_id) looks like 3nf. What stops you applying this?– Derviş Kayımbaşıoğlu
Mar 8 at 7:09
post-category-tag, with fields: (id, post_id, category_id, tag_id) looks like 3nf. What stops you applying this?– Derviş Kayımbaşıoğlu
Mar 8 at 7:09
@Simonare Can you show me how some fields look like?
– Alex Smirnov
Mar 8 at 7:14
@Simonare Can you show me how some fields look like?
– Alex Smirnov
Mar 8 at 7:14
Actually, if a post can belong to more than one category, then I would expect there to be a table of post_categories, otherwise I would expect category_id to be a column in posts. Then I would expect there to be another table: post_tags, with no mention of categories in it. Note that there are no 'articles' here.
– Strawberry
Mar 8 at 8:21
Actually, if a post can belong to more than one category, then I would expect there to be a table of post_categories, otherwise I would expect category_id to be a column in posts. Then I would expect there to be another table: post_tags, with no mention of categories in it. Note that there are no 'articles' here.
– Strawberry
Mar 8 at 8:21
@Strawberry Is it right? post_category (id, post_id, category_id), post_tags(id, post_id, tag_id).
– Alex Smirnov
Mar 8 at 10:32
@Strawberry Is it right? post_category (id, post_id, category_id), post_tags(id, post_id, tag_id).
– Alex Smirnov
Mar 8 at 10:32
It depends on your requirements, but looks plausible to me. And, as mentioned, the surrogate key may not be necessary if the remaining columns serve to uniquely identify each row (a natural composite key).
– Strawberry
Mar 8 at 10:34
It depends on your requirements, but looks plausible to me. And, as mentioned, the surrogate key may not be necessary if the remaining columns serve to uniquely identify each row (a natural composite key).
– Strawberry
Mar 8 at 10:34
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55058100%2fhow-to-create-article-tables-categories-and-tags%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55058100%2fhow-to-create-article-tables-categories-and-tags%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
post-category-tag, with fields: (id, post_id, category_id, tag_id)looks like 3nf. What stops you applying this?– Derviş Kayımbaşıoğlu
Mar 8 at 7:09
@Simonare Can you show me how some fields look like?
– Alex Smirnov
Mar 8 at 7:14
Actually, if a post can belong to more than one category, then I would expect there to be a table of post_categories, otherwise I would expect category_id to be a column in posts. Then I would expect there to be another table: post_tags, with no mention of categories in it. Note that there are no 'articles' here.
– Strawberry
Mar 8 at 8:21
@Strawberry Is it right? post_category (id, post_id, category_id), post_tags(id, post_id, tag_id).
– Alex Smirnov
Mar 8 at 10:32
It depends on your requirements, but looks plausible to me. And, as mentioned, the surrogate key may not be necessary if the remaining columns serve to uniquely identify each row (a natural composite key).
– Strawberry
Mar 8 at 10:34