Is there a way in which we can use the tablespace concept of Oracle in HSQLDB?
I have some Oracle scripts which uses tablespace concepts. I want to convert them such that they can be used with HSQLDB too.
Is there a way in which we can use the tablespace concept of Oracle in HSQLDB?
No. HSQLDB does not support tablespaces nor does it have any similar concept.
Related
Since YugabyteDB is a Postgres based implementation, will Postgres large objects( https://www.postgresql.org/docs/9.2/largeobjects.html) work in YSQL?
YugabyteDB currently supports BYTEA same as Postgresql. But doesn't have support for Large Objects like Postgresql (splitting the blob internally into chunks). There is a feature request issue on github for large object support.
I want to monitor Oracle database using SQL queries from internal tables. Are there any differences between Oracle for UNIX/Windows/Linux/OS?
In particular, do these tables exist and have the same structure in every platform? Do they change between 10g and 11g?
V$SYSSTAT
V$SESSTAT
v$session
I don't have access to test environments of production systems to check the tables differences.
Yes, internal system views for the same Oracle version are the same on different platforms.
System views might be different between Oracle releases.
You can look for the information in Oracle documentation. It's hard to find anything there but since it's published on-line you can use Google or any other search engine and search for "Oracle 10g V$SYSSTAT", "Oracle 11g V$SYSSTAT", etc.
For instance, docs for V$SYSSTATon 10g show the table exists and gives a list of column names, types and other relevant details. It doesn't mention that this information depends on the OS so we can assume it's universal.
Recently, I was having a discussion with my friend over the features of SparkSQL when we came across this question. Are they ACID transactions? Does SparkSQL follow CAP theorem?
I am a little new to this field, help me out. Thanks in advance.
SparkSQL is a query language and not a storage like Hive or MYSQL. Although it can register table which can be used by others, its only temporary. SparkSQL supports what the underlying databases support.
SparkSQL follows the Relational database model.
It does not support Hive transactions ("ACID").
Following are few useful posts:
http://www.cloudera.com/documentation/enterprise/release-notes/topics/cdh_rn_spark_ki.html
http://db-engines.com/en/system/Oracle+NoSQL%3BSAP+IQ%3BSpark+SQL
I have read about scalebase but did not understand is it NoSQL database or not? Or they just well horizontal scaled SQL database?
Per wikipedia (https://en.wikipedia.org/wiki/ScaleBase) it is a distributed MySQL implementation. It supports SQL. So, by definition, it doesn't qualify as "NoSQL"
I am new to DB technologies. And now I have reached such concept as procedures and PL/SQL. As it is written it is a specific language added to Oracle SQL databases. Does it mean that this language is only available on Oracle DBs? And is not available on postgres, mysql and sqlite solutions?
PL/SQL is indeed an Oracle specific language. However most databases have similar languages - SQL Server has T-SQL, Postgres has PL/pgSQL, MySQL has its own variant (which doesn't seem to have a nifty name), etc.
The syntax of all these languages differ, but the concepts are similar.