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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...EMOVE)
private Address address;
:
}
Orphan Removal
JPA 2 supports an additional and more aggressive remove cascading mode
which can be specified using the orphanRemoval element of the
@OneToOne and @OneToMany annotations:
@Entity
class Employee {
:
@OneToOne(orphanR...
How do I execute inserts and updates in an Alembic upgrade script?
... application.
"""create teams table
Revision ID: 169ad57156f0
Revises: 29b4c2bfce6d
Create Date: 2014-06-25 09:00:06.784170
"""
revision = '169ad57156f0'
down_revision = '29b4c2bfce6d'
from alembic import op
import sqlalchemy as sa
from sqlalchemy import orm
from sqlalchemy.ext.declarative imp...
创建自定义 TinyWebDB 服务 · App Inventor 2 中文网
...码颜色 colorLight: "#ffffff" //背景颜色}); App Inventor 2 中文网 © 2023 - document.write(new Date().getFullYear()); 跟着学（上海）教育科技有限公司 版权所有，未经书面许可，不得转载或使用 隐私策略和使用...
How do I purge a linux mail box with huge number of emails? [closed]
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EdoDodoEdoDodo
7,76233 gold badges2020 silver badges3030 bronze badges
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Posting a File and Associated Data to a RESTful WebService preferably as JSON
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edited Mar 6 '19 at 12:28
Sergio B
5511 silver badge99 bronze badges
answered Nov 3 '10 at 2:59
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Basic http file downloading and saving to disk in python?
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209
A clean way to download a file is:
import urllib
testfile = urllib.URLopener()
testfile.retr...
How to get current path with query string using Capybara
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213
I've updated this answer to reflect modern conventions in capybara. I think this is ideal sinc...
What's the status of multicore programming in Haskell?
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In the 2009-2012 period, the following things have happened:
2012:
From 2012, the parallel Haskell status updates began appearing in the Parallel Haskell Digest.
2011:
Parallel and Concurrent Programming in Haskell, a tutoria...
Mongoose query where value is not null
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edited Jul 23 '15 at 15:27
answered May 13 '13 at 22:11
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MySQL: Quick breakdown of the types of joins [duplicate]
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27
Based on your comment, simple definitions of each is best found at W3Schools
The first line of ...