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Project Description:
I want a database for large governmental and private data sets on one country that will be easily extended to other countries in the future. Also, the database should have a user friendly interface with analysis tools (statistical analyses, geo-spatial tagging, graphical outputs, etc.).
Skills required are Big Data, Data Processing, Data Mining, Database Administration, SQL
What is Cursors how to use it in Real time application ?
MERGE and TRUNCATE in SQL SQL has two more table update operators, MERGE and TRUNCATE. MERGE, like INSERT, takes a source table s and uses it to update a target table t. Brief
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When Are Constraints Checked Under the model constraints are conceptually checked at all statement boundaries (and only at statement boundaries). By default the same is true
Defining REF CURSOR Types To make cursor variables, you take 2 steps. At first, you define a REF CURSOR type, and then declare the cursor variables of that type. You can defin
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Deriving Predicates from Predicates in SQL The corresponding section in the theory book describes how predicates can be derived from predicates using (a) the logical connectiv
Using NOT NULL Besides assigning an initial value, the declarations can impose the NOT NULL constraint, as the example below shows: acct_id INTEGER(4) NOT NULL := 9999; You ca
what are ER diagrams
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