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To gather the necessary information for the logs, two data structures have to be maintained: the dirty page table (DPT) and the transaction table (TT). The dirty page table keeps record of all the pages that have been modified, and not yet written to disk, and the first Sequence Number that caused that page to become dirty.
Zimmermann–Laband syndrome (ZLS) [3] is two different conditions (ZLS, type 1 and ZLS, type 2) that share similar clinical features. It is an extremely rare, [ 4 ] autosomal dominant [ 5 ] congenital disorder .
This is also known as a Horizontal Partition, restricting rows output by a query according to specified conditions. With more than one table, the result set will be every combination of rows. So if two tables are T1 and T2, SELECT * FROM T1, T2 will result in every combination of T1 rows with every T2 rows. E.g., if T1 has 3 rows and T2 has 5 ...
In the context of information retrieval, QBE has a somewhat different meaning. The user can submit a document, or several documents, and ask for "similar" documents to be retrieved from a document database [see search by multiple examples [2]]. Similarity search is based comparing document vectors (see Vector Space Model).
On a global level, researchers found that 2.2 million new cases of type 2 diabetes and 1.2 million new cases of heart disease in 2020 were attributable to SSBs—representing about 1 in 10 new ...
By Daniel Wiessner (Reuters) - Alphabet's Google is facing a second complaint from a U.S. labor board claiming that it is the employer of contract workers and must bargain with their union, the ...
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Most relational database designs resolve many-to-many relationships by creating an additional table that contains the PKs from both of the other entity tables – the relationship becomes an entity; the resolution table is then named appropriately and the two FKs are combined to form a PK. The migration of PKs to other tables is the second ...