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Gaps in sequence values can happen when:
- A rollback happens that is when a statement changes are not accepted.
- When the system crashes
- When a sequence is used in another table.
What are the disadvantages of relational data ? Disadvantages • Performance - If the number of tables among that relationships to be established are large and the tables t
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
wh
Nested Queries Let us see some more complex queries in this section. Sub-queries: Some of the basic concerns of sub-queries are: A sub-query is a SELECT statemen
Let us now make the E-R diagram for the student database as per the explanation given in the previous section. We can also states the overall logical structure of a database usi
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
folding method and mid square method using visual basic
Express the ways provided by MySQL for Pattern Matching? MySQL provides two kinds of pattern matching. 1) One is based on SQL patterns 2) Regular expressions.
State the functional approach of object oriented methods Moving from a functional approach to an object oriented one needs a translation of functional model elements into objec
1. Determine the set of minimal functional dependencies for the following data. The local bakery, Happy Cakes, needs your help designing a database that will support a kiosk in
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