What is the difference between Schema and Database in Oracle?
2014年6月12日 · One characteristic of an RDBMS is the independence of physical data storage from logical data structures. In Oracle Database, a database schema is a collection of logical data structures, or schema objects [i.e. related tables]. A database schema is owned by a database user and has the same name as the user name.
schema - Oracle database transfer: database isolation - Database ...
2024年12月18日 · A PDB is not equivalent to a pg/mssql (not pluggable) database. An Oracle Pluggable Database (PDB) is a self-contained database (with schemas, users, roles, datafiles, etc.) you can plug out of a service/container-db (CDB) and plug back in onto another service/container-db (CDB). Therefor the name "pluggable database".
erd - ER vs database schema diagrams - Database Administrators …
2020年10月14日 · ER diagramming grew out of ER modeling. ER models were intended to be application neutral, so that ER modeling could be applied to a given situation whether the ultimate implementation was to use relational databases or some other technology, such as the (then current) hierarchical databases or the CODASYL style network databases.
sql server - How do you document your databases? - Database ...
SchemaCrawler produces a text file with all of database schema objects. This text output is designed to be both human-readable, as well as diff-able against similar output from another server. In practice, what I have found is that outputting a text file of the database schema is useful, when done as part of the build.
SQL Server - granting permissions to an entire schema vs. object?
2016年1月6日 · You can GRANT schema permissions that are effective for everything existing and everything that will exist in that schema. Grant Schema Permissions. GRANT SELECT, INSERT, UPDATE, DELETE ON SCHEMA :: <schema> TO <user>; Further to that, if you want to then deny permissions on a certain object within that schema, you can do. Denying Object ...
Database design of Room Booking system in a Hotel
2016年1月5日 · I am currently designing a Database for a Room Booking system in a Hotel. Client fills a Form / Request with following information about Room: amount of people in room; rating of a room; check in and check out date; Administrator has a dashboard with list of Forms from Clients, he will assign each Room for every Client manually. After this User ...
Database model with users, roles and rights
2011年3月14日 · I have a database model with a user table and role table. I want to control the access (rights) to up to 10 different elements. The access can be granted to either a role or a single user. Below is the table definition of users, roles and items:
database schema design for school system
2012年8月7日 · Another thing to note is that if teacher A teaches a class called 'Maths' and teacher B also teaches a class called 'Maths' then these should be different entities in the database (I think). For example, I may want to get a list …
postgresql - Schema design for user activity logging - Database ...
2016年11月1日 · I'm designing a schema to support logging of user activity, where users must be able to search: Across all events (events of any type), with datetime range, by username; Across events of one type, with same as above and additionally with parameters of that module. I created this schema: And designed queries to search: across all events:
Double entry bookkeeping database design
2015年5月24日 · Indeed, the single row accounting schema proposed allows to do proper double entry accounting (to always specify the account debited and credited) without introducing the redundancy of the "amount" data. The one row schema gives you an implementation of a double entry that balances by construction, so that it is impossible to ever "loose balance".