1. A blade terminal for an electrical power connector, comprising:
at least a pair of metal layers juxtaposed to form a laminated structure and the metal layers including,
generally planar joining sections,
terminating portions projecting from the joining sections for connection to appropriate conductor means, and
contact blade portions projecting from the joining sections for mating with appropriate terminal means of a complementary connecting device, the contact blade portion of each metal layer including a finger which is immediately adjacent to a finger of another of the metal layers, wherein the contact blade portion of one metal layer includes a single finger between and coplanar with a pair of fingers of another of the metal layers to form a single planar blade.
2. The blade terminal of claim 1, including four of said metal layers forming a pair of inside metal layers and a pair of outside metal layers, the contact blade portion of each inside metal layer including a finger which is coplanar with a finger of the contact blade portion of an adjacent one of the outside metal layers.
3. The blade terminal of claim 2 wherein each combination of the contact blade portions of an inside metal layer and an outside metal layer are configured such that one contact blade portion includes a single finger between and coplanar with a pair of fingers of the other contact blade portion to form a single blade.
4. The blade terminal of claim 3 wherein the single blades of the contact blade portions of the combinations of inside and outside metal layers are spaced from each other.
5. The blade terminal of claim 1 wherein the contact blade portion of one layer has at least one finger in one plane in direct contact with at least one finger of another layer in a second co-planar plane.
6. A laminated terminal for an electrical power connector, comprising:
at least a pair of metal layers juxtaposed to form a laminated structure and the metal layers including,
generally planar joining sections,
terminating portions projecting from the joining sections for connection to appropriate conductor means, and
contact blade portions projecting from the joining sections for mating with appropriate terminal means of a complementary connecting device, the contact blade portion of each metal layer including a finger which is in a plane parallel and immediately adjacent to a finger of another of the metal layers, wherein the contact blade portion of one metal layer includes a single finger between and coplanar with a pair of fingers of another of the metal layers to form a single laminated terminal.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of generating a selectivity estimate of a hierarchy query over a plurality of objects, comprising:
receiving the hierarchy query over the plurality of objects, each object of the plurality of objects having an associated type, each type having an identifier, said each type being extensible using an inheritance extension, and said each type is a user defined type (UDT);
encoding said each object of the plurality of objects with a type path derived from the identifier, wherein said type path comprises a variable-length encoded value, and said variable-length encoded value corresponds to a hierarchy level of a type of an associated object;
storing results of the encoding in a column;
creating a histogram of the column by using encoded objects;
for said each object, determining if a type path of said each object satisfies the query by using the histogram;
generating a selectivity estimate of the hierarchy query of the objects by dividing a number of matching objects by a sum of a number of matching objects and a number of non-matching objects, wherein the matching objects have the type path that satisfies the query; and
outputting the selectivity estimate of the hierarchy query to a storage device.
2. The method of claim 1, further comprising determining which type paths will satisfy the query.
3. The method of claim 1, further comprising encoding the query so that the query has a type that can be satisfied.
4. The method of claim 1, wherein each type can be a subtype of another type.
5. The method of claim 1, wherein each object has an associated type in a hierarchy of types.