Answer the following statements true (T) or false (F)
1. An object identifier is a unique key for each record in the database, not just in a table.
2. Secondary keys can be used to select a group of records that belong to a set.
3. Metadata describes the name given and the length assigned each record.
4. Master files are large and contain all the information about an entity.
1. TRUE
2. TRUE
3. FALSE
4. TRUE
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Each cable type can transport data at a particular speed only so far before its signals begin to weaken past the point that a receiving station can read them accurately What is the term for this phenomenon?
A. electromagnetic interference B. crosstalk C. attenuation D. radio frequency interference
In September 2010 Toshiba launched the first embedded flash memory modules (i.e., for incorporation on circuit boards rather than as plug?in modules). These devices had a capacity of 128 GB in a 17 × 22 × 1.4 mm FBGA package. What is the corresponding areal density in bits/inch2?
What will be an ideal response?